*SOLD* AMT Automag II .22 WMR Stainless 6" *THE RIMFIRE MAGNUM MARVEL*

Bryant Ridge's Analysis:

The AMT AutoMag II represents a rare fusion of innovation and practicality in the realm of rimfire semi-automatic handguns. Chambered in .22 Winchester Magnum Rimfire (WMR), the AutoMag II tackles a unique set of challenges typically not encountered in standard autoloading pistol designs. One of the major engineering hurdles was the extraction problem caused by the high-pressure, slow-burning rifle powder used in .22 WMR cartridges. Unlike handgun rounds, these rounds generate peak pressure later in the firing cycle, which can result in case expansion and sticking within the chamber—especially problematic in a blowback-operated firearm. AMT's solution was both clever and unconventional: drilling a series of radial pressure relief holes in the chamber and welding a sleeve over them. This setup allowed excess gas to vent in a controlled manner, thereby reducing chamber pressure just enough to enable reliable extraction. This innovation enabled the AutoMag II to function consistently where others had failed, establishing it as one of the few successful semi-automatics chambered for .22 WMR.
 
In terms of design, the AutoMag II incorporates several mechanical and aesthetic elements that enhance both performance and durability. The large cutout in the stainless steel slide, reminiscent of the Beretta M9, likely serves dual purposes—facilitating faster heat dissipation from the barrel and, more importantly, reducing the mass of the slide. A lighter slide is essential in a blowback-operated firearm chambered for a relatively high-pressure rimfire cartridge, as it helps maintain timing and ensures the slide cycles reliably without requiring a locked breech. The full stainless steel construction not only contributes to the pistol’s robust appearance but also offers excellent corrosion resistance, making the AutoMag II suitable for use in a variety of environments. While its niche caliber and unconventional engineering limited its mainstream popularity, the AutoMag II remains a compelling piece for firearms enthusiasts and collectors alike, standing as a testament to creative problem-solving in firearm design.

Specifications:

Manufacturer: AMT (Arcadia Machine & Tool)
Model: Automag II
Serial: GDA00364
Caliber: .22 WMR
Finish: Stainless
Barrel Length: 6" 
Optics/Sights: Fixed Ramp Front with White Stripe Front and Adjustable White Outline Millett Rear
Stock/Grips: Grooved Polymer Lexan Grips
Action: Semi-Automatic Pistol 
Markings: Standard

Jun 27th 2025 Bryant RIdge

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