Rainier Arms AR-15 Urban Combat M-Lok Handguard

Rainier Arms Urban Combat Rail features MLOK slots at the 3, 6 & 9 o'clock positions for adding user defined rail sections. Anti-Rotation QD sockets at the 3 o'clock & 9 o'clock positions. Features: CNC machined extruded 6000 series Aluminum Hard Coat Anodized Milspec Type III. Class 2 Barrel Nut - 7075 Aluminum 17-4PH Cored Stainless Steel Rail Mounting Hardware - Patent Pending Anti rotation tabs to easily align rail to upper receiver No Barrel nut shims required for installation 1.315" Interior Diameter Includes barrel nut wrench Compatible with most known low profile adjustable and non-adjustable gas blocks Made & Assembled in USA Total Weight Including Mounting Hardware: 15" - 12 oz 13.7" - 11.2 oz 10.7" - 9.6 oz 9.5" - 8.8 oz