ATI Alpha Maxx Features The ATI Alpha Maxx is built around a 7.5 threaded barrel with a 1:8 twist rate optimized for the 223 Rem/5.56 NATO cartridge s full range of projectile weights in a compact AR pistol format. A 2-position thumb safety provides a familiar positive control interface for shooters transitioning from standard AR-platform rifles while the flat top polymer receiver offers a clean mounting surface for optics and accessories. The 5/8x24 threaded muzzle accommodates suppressors and muzzle devices for shooters who run cans or brakes on compact AR platforms. The AR-style 5.56 NATO pistol features a 7 M-LOK handguard that provides ample real estate for lights lasers grips and other accessories across the compact 22 overall platform. A red and green duo adjustable sight ships installed for immediate use while the flat top receiver accepts standard AR-height optics for shooters who prefer a red dot or magnified optic. The rear brace rounds out the pistol configuration providing a stable shooting platform without the regulatory requirements of a traditional stock. ATI developed the Alpha Maxx as a compact feature-packed AR pistol for shooters who want the 5.56 NATO cartridge s performance and the AR platform s modularity in a short maneuverable package. The polymer upper and lower construction keeps the platform lightweight while the 60-round window magazine provides an immediate high-capacity solution without a magazine change. It arrives as a complete ready-to-run AR pistol platform with sights brace and magazine included out of the box. ATI Alpha Maxx Specifications Manufacturer: American Tactical Inc Model: Alpha Maxx Series: ALPHA-15 Caliber: 223 Rem/5.56 NATO Action: Semi-Auto Barrel Length: 7.5 Barrel Description: Threaded Thread Pattern: 5/8x24 Twist Rate: 1:8 Capacity: 60+1 OAL: 22 Finish: Matte Black Receiver: Polymer Receiver Description: Flat Top Handguard: 7 M-LOK Sights: Red & Green Duo Sight Sight Type: Adjustable Grips: A2 Pistol Grip Safety: 2 Position Thumb Safety Includes: 60rd Window Magazine Rear Brace