The Daniel Defense MK18 SBR is the authentic, factory-direct version of the most deployed close-quarters carbine in U.S. Special Operations history, equipped with the exact RIS II picatinny quad rail issued to USSOCOM. Its battle-proven Bolt-Up System handguard, uninterrupted 1913 top rail, and rugged aircraft-grade aluminum construction have been rigorously tested and fielded worldwide since 2006. Powered by a 10.3" Cold Hammer Forged, chrome-lined government-profile barrel with 1:7 twist, this all-black MK18 delivers devastating terminal performance and sub-MOA accuracy in the smallest possible package. Fully Mil-Spec 7075-T6 receivers, an independently ambidextrous GRIP-N-RIP charging handle, chrome-lined M16-profile BCG with properly staked gas key, and a carbine-length gas system tuned with an H-buffer ensure legendary reliability under the harshest conditions. At just 5.88 lbs and collapsing to 26.75", the MK18 remains the benchmark for speed, maneuverability, and controllability in room-clearing, vehicle work, or executive protection roles. Finished in uniform black Type III hard-coat anodizing and shipped with three Santoprene heat-resistant rail ladders, Daniel Defense buttstock and pistol grip, a 32-round magazine, and full-latch hard case. 100% made in the USA and backed by Daniel Defense's lifetime satisfaction guarantee. Own the original SOCOM MK18 in factory configuration - order your all-black Daniel Defense MK18 10.3" SBR today from Battlehawk Armory with fast, expert NFA processing. Specifications: Mounting System: Picatinny Quad Rail Caliber: 5.56mm NATO Muzzle Thread: 1/2"x28 TPI Gas System: Carbine Barrel Length: 10.3" Barrel Profile: Government Product Weight: 5.88 lbs Length: 26.75" - 29-7/8" w/ Muzzle Device Magazine: 1- 32rd Daniel Defense Magazine Case: Daniel Defense Full-Latch Impact Plastic Case