Mustang Armament Chesty 12.5" 5.56 NATO Pistol The Mustang Armament Chesty 12.5" 5.56 NATO pistol brings duty-grade performance and suppressor-optimized reliability to a compact AR platform available at Battlehawk Armory. Named for Lieutenant General Lewis B. "Chesty" Puller, this custom billet build is engineered without compromise, combining a premium billet receiver set, proprietary barrel system, and enhanced operating components into a cohesive fighting pistol ready for hard use. Every element is selected and tuned for consistent cycling, reduced gas blowback, and precise control whether suppressed or running open. At the heart of the Chesty is an 12.5-inch barrel system paired with suppressor-optimized gas dynamics, an advanced recoil system, and fully ambidextrous premium controls. Built under rigorous quality control with live-fire testing and backed by a lifetime warranty against defects in materials and workmanship, the Chesty stands as a no-compromise expression of Mustang Armament's combat-inspired standards. Add the Mustang Armament Chesty 11.5" 5.56 NATO pistol to your collection at Battlehawk Armory today. Specifications Manufacturer: Mustang Armament & Consulting Model: Chesty Caliber: 5.56 NATO Barrel Length: 12.5" Capacity: 30 rounds (includes two magazines) Action: Semi-automatic Receiver: Premium billet upper and lower Barrel System: Proprietary / suppressor-optimized Gas System: Enhanced operating system Recoil System: Advanced recoil system Controls: Premium ambidextrous (safety, magazine release, bolt catch, charging handle) Included: Two 30-round magazines