The EGW Thread Protector 1/2-28 is designed to guard barrel threads from damage and provide a finished look when a compensator or flash hider is not in use.
Made from stainless steel barstock, it features a diamond-pattern knurling for easy hand tightening and loosening.
It is specifically sized to fit 1/2"-28 threads and has dimensions of .650" (1.6cm) in length and .810" (2.1cm) in outer diameter.