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The AA-12 Sledgehammer Shotgun is Coming for Civilian Sale

As far as drool-worthy unobtainium goes, the mythical full-auto AA-12 “Sledgehammer” shotgun ranks up there amongst the best of them. We played with one at TriggrCon 2018.

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Initially developed in the early 70s by Max Atchisson, the AA-12 was designed as a full-auto-only open bolt 12-gauge shotgun. Continually tweaked for decades and pushed mostly in vain to military and law enforcement markets, the AA-12 was much more successful in scoring appearances in movies, TV shows, and video games. With its stainless steel construction, gas-operated action, hefty recoil spring arrangement, and slow, roughly 360-rpm cyclic rate, the AA-12 was notable for minimal felt recoil and controllability in full-auto.

Atchisson sold the design in 1987 to Military Police Systems, which was responsible for all the subsequent product development. However, MPS saw limited commercial success and never fielded a semi-auto civilian variant of the AA-12.

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Fast forward to the present day, and Tactical Superiority and its new venture, Sol Invictus Arms, worked out a deal to finally make the AA-12 available commercially. Working closely with one of MPS’s principals, they created a semi-automatic version, further refined the design, and set up modern production processes.

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The civilian version sports a longer, NFA-friendly 18.5-inch barrel and fires from a closed bolt. The overall length is 38 inches and total weight is 10.5 pounds. You can choose from versions with the iconic, original A-frame iron sights or the Picatinny rail on a riser that replaced them. 20-round drum and 8-round box magazines will be available. Sol Invictus Arms plans for these guns to be limited editions of only 1,000 and is taking pre-orders on Armslist at $3,250.

Here’s a video from Larry Vickers demonstrating the full-auto AA-12:


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