The Rotex-SF HUB is fully compatible with all 1.375x24TPI "HUB" compatible suppressors on the market today and is constructed of Titanium and stainless steel components. This HUB is compatible with all B&T Rotex flash hiders as well as all SureFire SOCOM flash hiders muzzle brakes and WarComp hybrid muzzle devices. The HUB is simply threaded into compatible suppressors and snugged up with a spanner wrench. HUB assemblies can be semi-permanently attached using Rocksett or other thread locking compounds should the end user desire. The Rotex-SF HUB ships standard with all Rotex and SRBS rifle suppressors. Fully HUB Compatible (1.375x24TPI) Constructed of Titanium and Stainless Steel B&T Rotex Flash Hider and SureFire SOCOM Muzzle Device compatible One-Hand Mounting System 5.56x45mm & 7.62x51mm Compatible