These are for 1.375in x 24tpi tubes or suppressors that are available from other brands.
Enjoy our very reasonable muzzle devices and still use your existing 1.375×24 suppressor or blast can.
Made of Carbon steel. 1.375×24 external thread and internal thread for SDTA Muzzle Devices. Protrudes .50 and are tightened by a 1″ wrench.