Indeed, the Thompson became so widely known in that era that it is commonly (but erroneously) believed to be the first submachine gun. The modularity and clever design of the Stemple Takedown Gun is perhaps best illustrated by the STG-M1A and STG-1928 (these are the same gun with either a horizontal or vertical front grip). Under federal regulations, these changes make the Model 1927A1 legally a rifle and remove it from the federal registry requirements of the National Firearms Act. This scaled-down rimfire weighs half of those, which makes it more endearing to shoot. ), The staff of Savage Arms looked for ways to simplify the M1928A1, and produced a prototype in February 1942, which was tested at Aberdeen Proving Ground in March 1942. But alas, the National Firearms Act of 1934 has made private ownership of full-automatic Thompson M1s next to impossible. If you've ever shot an original "Tommy Gun" or owned one of Auto-Ordnance's M1927A1 semiautos, it could be argued that the best reason to own one that fires .22LR is that it doesn't require a fortune to shoot. The Cutts compensator, barrel cooling fins, and Blish lock were omitted while the buttstock was permanently affixed. The Rugers front sight is retained, and the rear sight is a .040-inch peep held by two screws that allow for slight windage adjustments; elevation is set for 25 yards. The Caliber .45 M1A1 Thompson utilized a simple blow-back system of operation, with fully and semi-automatic operation, 20-and 30-round detachable box magazines, a 600 rpm rate of fire with 432 ft-lb muzzle energy and an effective range of 50 yards. More than 1.5 million Thompson submachine guns were produced during World War II. So I got this crazy idea to turn my 10/22 into a semi-automatic Thompson. Ruger's multi-role small frame autoloading rifle - Sear - combines AR-10 power with AR-15 Portability. 21AC at the original price of $200.00, with the plain M1921 designated No. The "Thompson Commando" is a semi-automatic replica of the M1928A1. It had an extended receiver with a recoil buffer and was fed from 20-round magazines. The new rifle is built on an aluminum billet chassis with carbon-fiber forend and cheek riser featuring V-block bedding. They were then captured and used by the Khmer Rouge. Brigadier General John Taliaferro Thompsons legendary Tommy Gun arrived too late for World War I, but it served our country admirably throughout World War II, Korea and Vietnam. Military Police were fond of it, as were paratroopers, who "borrowed" Thompsons from members of mortar squads for use on patrols behind enemy lines. The Ruger 10/22 Takedown: Worlds Best Survival Gun? The Model 1927A5 is a semi-automatic, .45 ACP pistol version of the Thompson originally produced by Auto-Ordnance in West Hurley from the 1970s until the early 1990s or late 1980s. PO Box 72 Mudgeeraba QLD Australia 4213 The original Model 1928s were Model 1921s with weight added to the actuator, which slowed down the cyclic rate of fire, a United States Navy requirement. 0. The Auto-Ordnance Corporation was founded in America in 1916 with the intention of developing a variety of weapons; they may well have done so, but only one has survived, the Thompson sub-machine gun.Named for General John T. Thompson, the company's design director, the first models were built-in prototype form in 1919.The first production models appeared in 1921 and from then on manufacture . An extended thirty-round box magazine and a forty-round magazine, which were made by welding two 20-round magazines face to face, jungle style, were tested. This functional non-firing replica is a Collectors Armoury exclusive product. It was also depicted in Hollywood films during this era, most notably regarding the St Valentine's Day Massacre. As a long gun, it can be bought by hunters (even if it cannot be used to actually hunt for legal reasons). Late M1s also had simplified fire control switches, also carried over to the M1A1. The weapons had very high cyclic rates up to 1,500rpm. It is officially known as the "Thompson Semi-Automatic Carbine, Model of 1927A1." The bolt cocks and releases with a pull of the trigger. By late 1917, the limits of the Blish Lock were discovered (which is essentially an extreme manifestation of static friction), and, rather than the firearm working as a locked breech, the weapon was instead designed to function as a friction-delayed blowback action. And because no permanent changes are made to the host 10/22, it can be easily reconverted to its original configuration. Section leaders carried them instead of pistols or rifles. [56], During the Greek Civil War, the Thompson submachine gun was used by both sides. For example, the receiver is made from aluminum, which means that there is considerable weight savings as compared to a similarly configured .45-caliber Tommy Gun. Reloading an empty drum with cartridges was a difficult and involved process in which the 50 rounds would be inserted and then the magazine wound up until a minimum of 9 to 11 loud "clicks" were heard before seating the magazine into the weapon. [27], Thompson submachine guns were used by both sides during the 1948 Arab-Israeli war. Bob Meinert, FN Marketing Director, introduces FN's first commercial pistol suppressor, the FN Rush 9Ti. It became so prized that soldiers routinely picked up Thompson guns dropped by killed or wounded comrades. I took it to the range and people started saying I want one. So I began thinking, how can I create something for under $300 so the average guy could own a Tommy gun, because I think every man should have one.. [53] In the U.S. Army, many Pacific War jungle patrols were originally equipped with Thompsons in the early phases of the New Guinea and Guadalcanal campaigns, but soon began employing the Browning Automatic Rifle in its place as a point defense weapon. The real challenge was the lower-velocity benchrest loads that don't break 1,000 feet per second (fps). The internal design is completely different to operate from the closed bolt and the carbine has a barrel length of 16.5in (420mm) (versus open bolt operation and barrel length of 10.5in (270mm) for the fully automatic versions). This means you have the option to read your magazine on most popular phones and tablets. For example, to own one the person must be "grandfathered" and have owned one before the bill was passed against it. I was able to tighten it up, so now it fits better. | 7mm Remington Magnum vs. .270 Winchester: Tested and Compared, .224 Valkyrie Small Precision Rifle Cartridge: Everything You Need to Know, SCCY DVG-1 Sub-Compact Striker-Fired Pistol: Full Review, Buyer Beware: Buying 'Bargain' Guns Can Be Risky, SIG Sauer Custom Works P320 Spectre Comp Pistol: First Look, SIG Sauer Announces New P320-XTEN 10mm Pistol, SIG Sauer P322 Rimfire Pistol: First Look, Springfield Armory Hellion 5.56 NATO Bullpup Rifle: Tested. First issued in 1943, the M1 uses a simple blowback operation, with the charging handle moved to the side. It was never adopted by any military force, and only a small number were produced. The Thompson can be fired from 20-round box mags, or 50- and 100-round drum magazines. The new 9mm suppressor can mount easily to any pistol barrel threaded x28 inches and doesn't compromise on sound suppression, gas blowback or recoil. However, users complained that it was limited in capacity. It was made popular by television shows from the 1960s and was often envisioned around the world as a "gangster's" gun primarily used by criminals. By the end of the war, the M1A1 was replaced with the even lower-cost M3 (commonly called the "Grease Gun"). I was skeptical at first, because it's so inexpensive. The weapon was also sold to the general public. The remainder found their way to the Irish Republican Army by way of Liverpool, England, and were used in the last month of the Irish War of Independence (191921). It conjures up powerful images of the 1920s and 30s prohibition era. An empty box was easy to reload with loose rounds. models. ", The Machinist's Guide to the Thompson Submachine Gun, https://doi.org/10.1163/22134603-09010005, The Official Thompson Collectors Association Page, https://en.wikipedia.org/w/index.php?title=Thompson_submachine_gun&oldid=1152617586. On Feb. 24, 1942, Savage contracted with the Ordnance Dept. From $59.95. Built to modern engineering standards, the Thompson M1 is a reliable and highly accurate representation of its legendary WWII ancestors. Springfield Armory Magazine M14, M1A 308 Winchester 20-Round Steel Matte. Add to Cart. Shipping was fast and I was very please with how great good looks. An original Colt Model 1921 A or AC, Model 1927 A or AC, Model 1928 Navy A or AC, properly registered in working condition with original components can easily fetch from US$25,000 to $45,000+ depending on condition and accessories. Sharpe, Philip B. $64.99. Do Pistols Benefit From Popular Aftermarket Modifications? By the time of the Battle of Blair Mountain, 37 had been acquired by the West Virginia state police and 56 were in the hands of coal companies and local law enforcement. There were two military types of Thompson submachine gun: Over 1.5 million military Thompson submachine guns were produced during World War II.[27]. In World War 2 the Tommy Gun as it was often known, was popular with soldiers as a relatively compact automatic weapon with a hard hitting .45 round. Naturally, the furniture on these are shaped walnut. It featured an aluminum receiver to reduce weight. The M1928A1 variant entered mass production before the attack on Pearl Harbor, as on-hand stocks ran out. Many variations have been noted within this model. Thompsons(!) Guns Listing ID: 407955The Auto-Ordnance Thompson 1927A1 is a semi-automatic rifle chambered in 45 ACP that comes standard with a 20-round stick magazine but it can accept stick or drum magazines of m .Click for more info Seller: Guns Dot Com Area Code: 866 $2,100.00 THOMPSON M1 Carbine GI#: 102229065 The testers considered both superior to either the "XX" box or "L" drum. The Thompson submachine gun is one of the most iconic American guns ever produced. . This rate of fire, combined with a rather heavy trigger pull and a stock with an excessive drop, increases the tendency for the barrel to climb off target in automatic fire. [26], The Thompson was widely adopted by the U.S. armed forces during World War II, and was also used extensively by other Allied troops during the war. More reliable than most submachine guns in field conditions of dirt and rain, etc, it was . It weighed almost 10 pounds (4.5 kg) empty and fired .45-calibre ammunition. Rate of fire was reduced to approximately 600700rpm. Though the M3 was considerably cheaper to produce, at the end of World War II, the Thompson, with a total wartime production of over 1.5 million, outnumbered the M3/M3A1 submachine guns in service by nearly three to one. [65][66] In 1927, the U.S. Navy ordered 500 Thompsons but requested a lower rate of fire. I wish they would charge more and make a little better product. If you're unfamiliar with the Tommy Gun's controls, take a few minutes to read the owner's manual. This one's serial number is very low - 8,000 range, and it does not have the 1972 patent date, so we estimate it was manufactured in 1971. There are disciplines in government approved sport shooting rulebooks that allow this type to be used, therefore the gun can be bought by sport shooters, too. The frame and receiver are milled from solid steel or aluminum, the wood is genuine American walnut, and the overall finish is a blued steel or black anodized aluminum. It's about half the scale of a real Thompson Model 1921 submachine gun that it mimics. [64], Early versions of the Thompson, the Model 1919, had a fairly high cyclic rate of fire, as high as 1,200rounds per minute (rpm), with most Model 1921s at 800rpm. [35], The major initial complaints concerning the Thompson were its cumbersome weight, its inaccuracy at ranges over 50 yards (46m), and its lack of penetrating power using the .45 ACP cartridge. Predictably, Standard's 1922 worked with standard and high-velocity loads. And although sometimes overshadowed by its G-man Model 1921 counterpart, it is the United States Submachine Gun, Cal. In the European theater, the gun was widely utilized in British and Canadian commando units, as well as in the U.S. Army paratrooper and Ranger battalions, where it was issued more frequently than in line infantry units because of its high rate of fire and its stopping power, which made it very effective in the kinds of close combat these special operations troops were expected to undertake. There were two military types of Thompson submachine gun: The M1928A1, which had provisions for both box and drum magazines, utilized the Cutts muzzle brake, had cooling fins on the barrel, and employed a delayed blowback action with the charging handle on the top of the receiver. This Commercial Model features a 50 round removable drum and pistol fore grip, just like Capones soldiers would have used. .45, M1, with horizontal fore-end, L-shaped rear peep sight, side-mounted charging handle and stick magazine that causes many of us to hyperventilate whenever we see it in movies such as The Longest Day, Saving Private Ryan and Band of Brothers. Indeed, after a brief full-automatic familiarization course with it many years ago during Officer Candidate School, I remember being impressed with its 650-r.p.m. [30] Its principal designers were Theodore H. Eickhoff, Oscar V. Payne, and George E. Goll. by R. Blake Stevens Collector Grade Publications (2004). Many of the Colt models had French-language manuals packed with them as they had been abruptly diverted to England after the fall of France. The Thompson was one of the earliest submachine guns to incorporate a double-column, staggered-feed box magazine design, which undoubtedly contributed to the gun's reputation for reliability. Only one prototype was made in .351 WSL using a standard 20" barrel which had a ROF of 1000rpm. Thompson came across a patent issued to the American inventor John Bell Blish in 1915, while searching for a way to allow his weapon to operate safely without the complexity of a recoil or gas-operated reloading mechanism. The magazine was either a circular drum that held 50 or 100 rounds or a box that held 20 or 30 rounds. Fifteen thousand were produced by Colt for Auto-Ordnance. They sold for $200 in 1921, the equivalent of roughly $3,000 today. The . The Model 1927A1 is the semi-automatic replica of the Thompson Models of 1921 and 1927. Assembly is so simple, even I was able to transform my 10/22 into a Thompson M1 in less than an hour. The three-position safety is located on the left side of the receiver and it moves vertically to cycle from safe to fire to lock positions. The slots adjoining the magazine well allowing the use of a drum magazine were removed. In 1939, Thompsons cost the government $209 apiece. There were fewer than 40 pre-production prototypes. In the early 2000s a bunch of Thompson parts kits came into the US, WW2 vintage lend-lease guns sent to Russia. So even though one is tempted to unleash a volley of 36-grain hollow points, rapid-fire can be sluggish. General Thompson's gun was about to face its greatest challenge. Blish's design (then known as the Blish Lock) was based on the supposed adhesion of inclined metal surfaces under pressure. The guns were also shipped to various hardware stores in the region. [80]:Part 1.86[81]. The exact cause remains unknown, but was resolved with the transition to the M1A1.[76]. From $34.95. It should come as no small comfort for any patriotic American to know that the countrys firearm industry is vibrant and productive, still faithfully serving the needs of armed citizens, law-enforcement officers and military personneljust as it has for more than two centuries. I am very pleased with my order. In 1938, the Thompson submachine gun was adopted by the U.S. military and was used during World War II. MAJOR STATISTICS OF THE WARTIME THOMPSON SMG, Rate of Fire: 700 - 800 rounds per minute, Feed System: 20 round stick mag, 30 round stick mag, 50 /100 round drum mag. Although somewhat true, its criminal use has overshadowed the Thompson's service in World War II by the United States and many of her allies. Only the fully automatic version is a prohibited weapon. A new magazine catch with the provision for retaining drum magazines removed, was produced, but most M1s and later M1A1s retained the original. Though it could use both the 50-round drum and the 20- or 30-round box magazines, active service favored the box magazines as the drums were more prone to jamming, rattled when moving, and were too heavy and bulky on long patrols. Thompson Magazine Thompson 45 ACP 10-Round Steel Blue. The Colt Patent Fire Arms Manufacturing Company in Hartford, Connecticut was contracted by the Auto-Ordnance Corporation to manufacture the initial mass production of 15,000 Thompson Submachine Guns in 1920. The BSA 1926 was manufactured in 9mmP and 7.63mm Mauser and were tested by various governments, including France, in the mid-1920s. The Thompson (with one Type XX 20 round "stick" magazine) had been priced at $200 in 1921 (roughly equivalent to $3,038 in 2021). 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Most of the design issues had been resolved by 1918; however, the war ended two days before prototypes could be shipped to Europe. Where to Buy a Thompson Submachine Gun Replica 1. Sometimes seen with the forward pistol grip and large drum magazine, and also later versions with stick magazines only and a straight timber foregrip. So it is with this one. The 10/22's Thompson persona is heightened by Scottwerx's optional pseudo-stick and drum magazines, which affix to Ruger's 10-round rotary mags. For WWII, approximately 1,700,000 Thompson Submachine Guns were produced by Auto-Ordnance and Savage Arms, with 1,387,134 being the simplified World War II M1 and M1A1 variants (without the Blish lock and oiling system[63]). The plain Thompson (without the attachment) was designated No. To fix this, the armorers removed the Blish Lock and replaced it with a hex bolt to keep the cocking handle and bolt together. 11, the Model 1919 takes the final appearance of the later Thompsons with the rear sights and butt stock. With the lock mechanism engaged and the bolt held open, you can remove or insert either the stick or drum magazines - but there's a trick to that as well. The rear sight almost doubles the 10/22s sight radius, increasing accuracy potential; I was bouncing tin cans at 100 yards. The Thompson sub-machine gun (the classic "Tommy Gun" associated with 1920s gangsters and 1940s grunts) is perhaps the most famous example, but the Uzi, MP5, and PPSh-41 also fall into this category. Brigadier general John T. Thompson was the original developer of the Thompson submachine gun, who spent most of his career in the ordnance department of the U.S. Army. Also good, if not surprising, was its accuracy. Now, you're ready to fire. In fact, the "Tommy Gun" was a favorite among early FBI agents as well. The Model 1927A3 is a semi-automatic, .22 caliber version of the Thompson produced by Auto-Ordnance in West Hurley. [78], A special purpose machine pistol variant of the Thompson is manufactured by RPB Industries of Atlanta.[79]. "Tommy Gun" redirects here. $34.95. Admin@SabreHQ.com Tel:1300 731 381 / 61 7 5530 5522. I think Gen. Thompson would approve. Let us know if you have suggestions to improve this article (requires login). There were two main experimental models of the Thompson. With the full backing of Thompson, who had been instrumental in the original development of the .45 ACP and had overseen the development of the U.S. Model of 1911 pistol, the design team. Bill Vanderpool. Joe Kurtenbach and Caleb Giddings also look at the first-ever optics-ready carry revolvers with the new Taurus 605 and 856 T.O.R.O. (1941). PRODUCT REVIEWS. It is now effectively impossible for a firearm of this type to be legally possessed by a member of the general public, except in certified deactivated condition or where specifically manufactured as a semi-automatic in caliber .22LR. The wood looks cheap and the metal looks fake. Most of the ones you're going to see in the U.S. are modified clones designed to fire on a closed bolt to meet U.S. law, such as the Polish-made. -. [27], It is the first weapon to be labelled and marketed as a "submachine gun".[28]. The M1923 was intended to rival the M1918 Browning Automatic Rifle (BAR), with which the Army was already satisfied. Upon learning of the friction-delayed blowback firing action patented by John Bell Blish in 1915, Thompson, a U.S. Army ordnance officer, sought to incorporate that design into an effective trench sweeper weapon. They are made from original 1928A1 guns of various appearance (with or without Cutt's compensator, ribbed or smooth barrels, adjustable or fixed sights), that were imported Lend-Lease guns from Russia. The Auto-Ordnance replica of the Thompson M1 and M1A1 is known as the TM1, and may be found marked "Thompson Semi-Automatic Carbine, Caliber .45M1". The less expensive and more-easily manufactured "stick" magazines were used exclusively in the M1, with a new 30-round version joining the familiar 20-round type. [52] The U.S. Marines also used the Thompson as a limited-issue weapon, especially during their later island assaults. Late M1s had triangular guard wings added to the rear L sight, which were standardized on the M1A1. ARMSCORs RIA 5.0 ST semi-automatic 9 mm Luger pistol represents the companys first handgun to be designed and manufactured here in the United States. Police say they will try and work out how four machine guns came to be buried at Lake Hume. The M1921 was quite expensive to manufacture, with the original retail price around $200, because of its high-quality wood furniture and finely machined parts. This was one of the major complaints about the weapon by U.S. Army personnel to whom it was issued. Chris Johnson, FN Senior Product Manager, walks us through two new FN striker-fired pistols at SHOT Show 2023: the FN 510 Tactical, chambered in 10mm Auto, and the FN 545 Tactical, chambered in .45 ACP. Thompson M1 will not accept drum magazines. The Thompson had to be cocked, bolt retracted, ready to fire, in order to attach the drum magazine. Consequently, they cannot be legally imported or owned except under very limited circumstances. The reinforced stock and protective sight wings were standard. The submachine gun can only be sold to other grandfathered individuals; this keeps prices extremely low as the number of permitted licensed individuals is very small and dwindling with time. Bannan, James F. and Hill, Tracie L. (1989). [42][43], In 1926, the Cutts Compensator (a muzzle brake) was offered as an attachment option for the Thompson. The "Thompson Submachine Gun" inscription was machined over to replace it with "Thompson Semi-Automatic Carbine", and the "Model 1921" inscription was also machined over to replace it with "Model 1927." While other weapons had been developed shortly prior with similar objectives in mind, the Thompson was the first weapon to be labeled and marketed as a "submachine gun". [28] Thompson intended for the weapon to provide a high volume of automatic, man-portable fire for use in trench warfarea role for which the Browning Automatic Rifle (BAR) had been determined ill-suited. The M1 bolt had a floating firing pin and hammer, the bolt of the M1A1 had the firing pin machined to the face of the bolt, eliminating unnecessary parts. The Viet Cong liked the weapon and used both captured models as well as manufacturing their own copies in small jungle workshops.[61]. From $44.95. $299.99. In 1940, Commonwealth troops in Egypt and North Africa were issued commercial model Lend-Lease Colt- and Savage-manufactured M1928s. They shipped their remaining stocks to arm the forces of Lon Nol's Khmer Republic in 1975. Nationalist China acquired a substantial number of Thompson guns for use against Japanese land forces. [37], Some of the first batches of Thompsons were bought (in America) by agents of the Irish Republic (notably the Irish politician Harry Boland). Because it could be obtained so easily, the Thompson became notorious during the Prohibition era as the signature weapon of various organized crime syndicates in the United States in the 1920s. One issuethe magazine fits somewhat loose and can fall out. [41] The Thompson has been referred to by one researcher as the "gun that made the twenties roar". Starting with the Serial no. The Sten and the M3 are so much better choices, and the MP40 is awesome. The new RIA 5.0 Sporting Pistol from Rock Island Armory features a patented RVS Recoil system that maximizes barrel mass and linear movement to give shooters super soft recoil. M1s were issued with the 30-round box magazine and would accept the earlier 20-round box, but would not accept the drum magazine. By the time of the Korean War in 1950, the Thompson had seen much use by the U.S. and South Korean military, even though the Thompson had been replaced as standard-issue by the M3/M3A1. In New Guinea, the Thompson was the only submachine gun available to the Australian Army for most of the vital Kokoda Track campaign in 1942. [36], Although the drum magazine provided significant firepower, in military service it was found to be overly heavy and bulky, especially when slung on the shoulder while marching. This model gained fame from its use by criminals during Prohibition, and was nicknamed "tommy gun" by the media. It has since been replaced with the Kahr Arms TA5 Pistol, which features a 10.5" barrel and steel receiver, unlike the 1927A5's 13" barrel and aluminum receiver. from United States These were basic, open-bolt, blowback designs. [47] (The concept of welding two box magazines face-to-face was also carried over to the M42 submachine gun. New Zealand commando forces in the South Pacific campaign initially used Thompsons but switched them for the more reliable, lighter, and more accurate Owen during the Solomon Islands and Guadalcanal campaigns. Copyright 2023 National Rifle Association, Women On Target Instructional Shooting Clinics, Volunteer At The Great American Outdoor Show, Marion P. Hammer Women Of Distinction Award, Women's Wildlife Management / Conservation Scholarship, National Youth Shooting Sports Cooperative Program, 10/22 ruger conversion kit to thompson submachine gun, Ruger Commemorates the 50th Anniversary of the 10/22. In World War 2 the 'Tommy Gun' as it was often known, was popular with soldiers as a relatively compact automatic weapon with a hard hitting .45 round. The original selective-fire Thompson variants are no longer produced, although numerous semi-automatic civilian versions are still being produced by the manufacturer Auto-Ordnance. The 1928 variant can be disassembled easily by first detaching the stock, then sliding off the lower receiver and then simply removing the internal parts, cleaning them, and then putting it back together. When opened up, the Thompson features a small number of parts that need to be removed including the spring, bolt, Blish Lock, and actuator bolt. Made from premium-grade, vegetable-tanned leather, the Burdette Custom Holsters Detective SA-35 holster is a custom outside-the-waistband (OWB) model for the Springfield Armory SA-35 semi-automatic pistol. The bolt handle is positioned at the top of the receiver and the knurled knob has a cutout so it doesn't obscure the sights. The Yugoslav Army received 34,000 M1A1 Thompsons during the 1950s as part of a US Military Aid to Yugoslavia Agreement. They are also famously associated with the US Army in WW2 including many famous Airborne and special units. Add to Cart. Home Defense III $4K Guns & Gear Giveaway Click here to enter now. His youth was much like that of a military brat, living from post to post, yet by the age of 16 he had . [4], During the failed 1924 coup Estonian communists used Thompsons in an attempt to storm the Tallin barracks; meanwhile the MP 18 was used by the defenders. The box magazine was quickly attached and detached, and was removed downward, making clearing jams easier. It fired the more powerful .45 RemingtonThompson cartridge which fired a heavier 250gr (0.57oz; 16g) bullet at muzzle velocities of about 1,450ft/s (440m/s) and energy about 1,170ftlb (1,590J), with greater range than the .45 ACP. Our editors will review what youve submitted and determine whether to revise the article. There is a large extractor and fixed ejector. Since rimfire ammunition varies greatly in pressures and velocities, building a gun that effectively cycles a range of ammunition deserves credit be given to engineering, especially when having to work another firearm's appearance and ergonomics.