AMT AutoMag II

Last updated

AMT AutoMag II
Type Semi-automatic pistol
Place of origin United States
Production history
Manufacturer Arcadia Machine and Tool
Unit cost$406 MSRP
Produced1987–1999
Specifications
Mass32 oz (910 g)
Barrel  length6 in (150 mm),
4.5 in (110 mm),
3.375 in (85.7 mm) (Compact Model)

Cartridge .22 Winchester Magnum Rimfire
Feed system9 round detachable magazine (Full-size Model)
7 round detachable magazine (Compact Model)
SightsWhite outline Millet adjustable sights (until late 1993)
Adjustable 3 dot system (since late 1993) [1]

The AMT AutoMag II is a semiautomatic handgun chambered in .22 WMR, that was manufactured by Arcadia Machine and Tool from 1987 until 1999, [2] and was manufactured by High Standard until their closure in 2018. [3]

Contents

Design

There were a number of engineering challenges to overcome in designing an autoloading .22 WMR handgun such as extraction problems. The extraction problems stem from the fact that the slow burning rifle powder of the .22 WMR cartridge develops a late peak pressure. This can cause the case mouth to expand and jam in the chamber when fired from a handgun. AMT overcame this issue by drilling 18 holes at 90 degrees to the chamber. A sleeve was then welded over the chamber; providing a tiny amount of clearance for the excess gas to escape from the first set of holes on back to the second set, thereby relieving the pressure enough to prevent the case from sticking. [4]

The stainless steel slide has a large cutout over the barrel, similar to the Beretta M9, to facilitate better cooling and ejection of the spent brass casing (more likely it is simply to reduce the moving mass of the slide to allow for the blow-back operation). The stainless steel construction throughout makes rust a non-issue.

See also

https://www.smith-wesson.com/product/mp-22-mag

Related Research Articles

<span class="mw-page-title-main">Cartridge (firearms)</span> Pre-assembled firearm ammunition consisting of a casing, projectile, propellant, and primer

A cartridge, also known as a round, is a type of pre-assembled firearm ammunition packaging a projectile, a propellant substance and an ignition device (primer) within a metallic, paper, or plastic case that is precisely made to fit within the barrel chamber of a breechloading gun, for convenient transportation and handling during shooting. Although in popular usage the term "bullet" is often used to refer to a complete cartridge, the correct usage only refers to the projectile.

<span class="mw-page-title-main">.45 ACP</span> Pistol cartridge designed by John Moses Browning

The .45 ACP, also known as .45 Auto, .45 Automatic, or 11.43×23mm is a rimless straight-walled handgun cartridge designed by John Moses Browning in 1904, for use in his prototype Colt semi-automatic pistol. After successful military trials, it was adopted as the standard chambering for Colt's M1911 pistol. The round was developed due to a lack of stopping power experienced in the Moro Rebellion in places like Sulu. The issued ammunition, .38 Long Colt, had proved inadequate, motivating the search for a better cartridge. This experience and the Thompson–LaGarde Tests of 1904 led the Army and the Cavalry to decide that a minimum of .45 caliber was required in a new handgun cartridge.

<span class="mw-page-title-main">.50 Action Express</span> Pistol cartridge designed by Evan Whildin

The .50 Action Express (AE) (12.7×33mmRB) is a large-caliber handgun cartridge, best known for its usage in the Desert Eagle. Developed in 1988 by American Evan Whildin of Action Arms, the .50 AE is one of the most powerful pistol cartridges in production.

<span class="mw-page-title-main">Smith & Wesson Model 1006</span> Semi-automatic handgun

The Smith & Wesson Model 1006 is a recoil operated double-action/single-action semi-automatic handgun chambered in the 10mm Auto cartridge manufactured by Smith & Wesson.

<span class="mw-page-title-main">.22 Winchester Magnum Rimfire</span> Rimfire cartridge

The .22 Winchester Magnum Rimfire, also known as the .22 WMR, .22 Magnum, .22 WMRF, .22 MRF, or .22 Mag, is a rimfire cartridge. Originally loaded with a bullet weight of 40 grains (2.6 g) delivering velocities in the 2,000 feet per second (610 m/s) range from a rifle barrel, .22 WMR is now loaded with bullet weights ranging from 50 grains (3.2 g) at 1,530 feet per second (470 m/s) to 30 grains (1.9 g) at 2,200 feet per second (670 m/s).

The Ruger 10/22 is a series of semi-automatic rifles produced by American firearm manufacturer Sturm, Ruger & Co., chambered for the .22 Long Rifle rimfire cartridge. It uses a patented 10-round rotary magazine, though higher capacity box magazines are also available. The standard carbine version of the Ruger 10/22 has been in production continuously since 1964, making it one of the most successful rimfire rifle designs in history, with numerous third party manufacturers making parts and accessories for upgrading and customization. The 10/22's aftermarket is so prolific that a complete 10/22 can be built without using any Ruger-made components.

A rim is an external flange that is machined, cast, molded, stamped, or pressed around the bottom of a firearms cartridge. Thus, rimmed cartridges are sometimes called "flanged" cartridges. Almost all cartridges feature an extractor or headspacing rim, in spite of the fact that some cartridges are known as "rimless cartridges". The rim may serve a number of purposes, including providing a lip for the extractor to engage, and sometimes serving to headspace the cartridge.

<span class="mw-page-title-main">Auto Mag Pistol</span> Semi-automatic pistol

The .44 Auto Mag pistol (AMP) is a large caliber semi-automatic pistol. It was designed between 1966 and 1971 by the Auto Mag Corporation to make a semi-automatic pistol chambered in .44 AMP.

<span class="mw-page-title-main">Moon clip</span> Ring-shaped holder for revolver cartridges

A moon clip is a ring-shaped or star-shaped piece of metal designed to hold multiple cartridges together as a unit, for simultaneous insertion and extraction from a revolver cylinder. Moon clips may either hold an entire cylinder's worth of cartridges together, half a cylinder, or just two neighboring cartridges. The two-cartridge moon clips can be used for those revolvers that have an odd number of loading chambers such as five or seven and also for those revolvers that allow a shooter to mix both rimless and rimmed types of cartridges in one loading of the same cylinder.

<span class="mw-page-title-main">Colt Delta Elite</span> Semi-automatic pistol

The Colt Delta Elite is a modified series 80 M1911 pistol chambered for the 10mm Auto cartridge. It was first introduced in 1987 by the Colt's Manufacturing Company.

<span class="mw-page-title-main">Arcadia Machine & Tool</span>

Arcadia Machine & Tool, commonly abbreviated to AMT, was a firearms manufacturer from Irwindale, California. The company produced several weapons, primarily clones of existing firearms, but made from stainless steel rather than the standard steel used for most firearms of the time.

<span class="mw-page-title-main">Wildey</span> Semi-automatic pistol

The Wildey is a gas-operated, double-action or single-action pistol designed by Wildey J. Moore. It was designed to fire several high-pressure proprietary cartridges including the .45 Winchester Magnum and the .475 Wildey Magnum. They are currently being produced by USA Firearms Corp.-Wildey Guns of Winsted, Connecticut.

<span class="mw-page-title-main">LAR Grizzly Win Mag</span> Semi-automatic pistol

The Grizzly Win Mag pistols were conceived, invented, designed, engineered and developed in the 1980s by the sole inventor, Perry Arnett, who licensed his patent for an interchangeable caliber semi-automatic pistol to L.A.R. Manufacturing Inc. Perry Arnett's designs were initially flawed and were improved upon by Heinz Augat. The L.A.R. Grizzly was the most powerful semi-automatic pistol ever commercially produced after the Desert Eagle.

The 9mm Winchester Magnum, which is also known as the 9×29mm, is a centerfire handgun cartridge developed by Winchester in the late 1970s. The cartridge was developed to duplicate the performance of the .357 S&W Magnum in an auto-pistol cartridge.

<span class="mw-page-title-main">Colt Double Eagle</span> Semi-automatic pistol

The Colt Double Eagle is a double-action / single action, semi-automatic pistol manufactured by Colt's Manufacturing Company between 1989 and 1997. It was available in standard full-size, as well as in more compact versions. It featured a decocking lever, and was chambered for several calibers. The family of models was known as the Series 90.

<span class="mw-page-title-main">AMT AutoMag III</span> Semi-automatic pistol

The AMT Automag III is a single action semi-automatic pistol made by Arcadia Machine and Tool (AMT). It was created by Harry Sanford, inventor of the original .44 AutoMag pistol. The Automag III was principally chambered for the .30 Carbine cartridge, which was originally designed for the World War II-era M1 Carbine. It was also one of the few pistols available in the 9mm Winchester Magnum cartridge, but only the original AMT production pistols were made in this chambering, however; later Galena production was limited to .30 Carbine models. The pistol is made of stainless steel and has an 8-round magazine.

<span class="mw-page-title-main">Smith & Wesson Model 457</span> Semi-automatic handgun

The Smith & Wesson Model 457 is a compact semi-automatic pistol from Smith & Wesson's Third Generation series of alloy and steel-framed handguns in company's Value Line of budget-priced auto pistols. The 457 is a compact pistol chambered for the .45 ACP cartridge. The design utilizes a double-action/single action trigger mechanism, meaning that the first shot is fired with long double-action pull, with following shots fired in single-action. The 457's external hammer omits a thumb spur, thereby reducing the risk of being caught on clothing during unholstering. A slide-mounted safety lever that drops the hammer from its cocked position when moved to the 'safe' position. The 457 has a 95 mm (3.75 in) barrel and 7-round magazine capacity. The Model 457 was produced with a matte-finish carbon steel slide and blackened aluminum alloy frame. Other versions include the Model 457S with a stainless steel slide and aluminum frame, and the Model 457TDA with a satin-finished aluminum frame and black carbon steel slide.

<span class="mw-page-title-main">Ruger Single-Six</span> Single action

The Ruger Single-Six is a single-action rimfire revolver produced by Sturm, Ruger & Co. The Single-Six was first released in June 1953.

<span class="mw-page-title-main">Handgun</span> Short-barreled firearm designed to be held and used with one hand

A handgun is a firearm designed to be usable with only one hand. It is distinguished from a long gun which needs to be held by both hands and braced against the shoulder. Handguns have shorter effective ranges compared to long guns, and are much harder to shoot accurately. While most early handguns are single-shot pistols, the two most common types of handguns used in modern times are revolvers and semi-automatic pistols, although other handguns such as derringers and machine pistols also see infrequent usage.

<span class="mw-page-title-main">FN Baby Browning</span> Pistol

The 1931 Fabrique Nationale (FN) Baby Browning is a small blowback-operated semi-automatic pistol designed by Belgium-born Dieudonné Saive chambered in .25 ACP. The pistol features a six-round magazine capacity and is a striker-fired, single action, blowback mechanism. The manual thumb operated safety locks the slide in the closed position when engaged using side thumb pressure.

References

  1. Fjestad, S.P. (1997). Blue Book of Gun Values (18th ed.). Minneapolis, MN: Blue Book Publications. p.  99. ISBN   1-886768-08-0.
  2. Dan Shideler; Jerry Lee (2012). 2012 Standard Catalog of Firearms: The Collector's Price & Reference Guide. Iola Wisconsin: Krause Publications. pp. 50–51. ISBN   978-1-4402-1688-6.
  3. "Model AMT-AutoMag II". 2014.
  4. Holloway, Thomas (2 April 2015). A Guide to Handgun Cartridges. New York: Barnes & Noble. pp. 41–44. ISBN   978-1-329-00762-8.