GrovTec 1/2-28 to 5/8-24 Suppressor Adapter A precision thread adapter that enables use of suppressors with 5/8-24 threads on barrels that feature 1/2-28 threads. Manufactured as a one-piece steel unit for dependable strength and long service life, the adapter preserves bore alignment and creates a secure, repeatable direct thread interface between host barrel and suppressor. A black oxide finish provides corrosion resistance and low-reflectivity appearance. Compact form and straightforward installation allow rapid conversion without additional muzzle devices.