This amazing patented tool is a one man shop for all AR-15 build projects. a AR15 Armorer\'s Barrel Wrench - Combo tool with many New Features/Tools to work and upgrade your AR-15/ M4/ M16 a Barrel Wrench for GI Barrel Nut, Free-Float Barrel Nuts with GI spacing, DD Barrel Nuts, and YHM ( 1A 3/4\") Spanner wrench a A2 (A 3/4\") and 5/8 Flash Suppressor wrench, M4 Collapsable Stock Castle Nut wrench, A2 Buffer Tube Wrench a Flat Blade Screw Driver for A2 Buttstock Plate, 1/2\" and 3/8\" Drive Compatible, Lower Receiver Push Pin Tool a 1/4\" Hex Bit Drive Socket, 1911 Barrel Bushing Wrench, and a Tactical Bottle Opener a Steel Construction a Length: 13.8\" a Weight: 13.0 oz