Free-float M-LOK AR-15 with a 16-inch chrome-lined barrel and DD MFR 15.0 handguard. Mid-length gas system. Widely used by US military personnel as a personal purchase to replace issued M4s. Consistently top-rated AR-15 platform. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2015, USA Weight: 6.2 oz Overall length: 35" Status: Active Intended use: Patrol / Military / Range