Quick view B&T Firearms B&t Firearms Hub Adapter, Bt Sd-145504 Qdsf Ii 7.62 Us Adapter $420.00 $355.00 The rotex-sf hub is fully compatible with all 1.375x24tpi hub compatible suppressors on the market 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... Compare Add to Cart