4-Pack R.U.T. .223 Steel Crush Washers For Muzzle Brake 1/2x28 Thread
This crush washer is essential when installing/reinstalling a muzzle brake/suppressor/compensator onto your threaded barrel to guarantee proper fit and indexing of an aftermarket muzzle accessory.
Crush washer allows you to install your muzzle device onto your threaded barrel.
No gunsmithing required.
Industrial grade steel.
Solid machined construction.
.223 (1/2x28): inner dia. 13mm; outside dia. 18.8mm.