DIRECT THREAD ADAPTERS The Direct Thread provides a mount interface for suppressors with inside diameter threading of 1.375-24. These mounts attach directly to your barrel, no muzzle device is needed. SPECIFICATIONS: Weight: 0.72 ounces Threads: 1/2-28, 5/8-24, 24A-1.5, 5/8-32, 9/16-24, 1/2-36, 9/16-28 Titanium ASR (1.375a ^2 - 24) Threaded Tubes and Suppressors DLC + Sline coated Mfg: Rearden Manufacturing Group Llc