The B&T SD-145550 is a direct thread adapter engineered for 5/8″x24 threaded barrels on .30 caliber hosts such as .308 and 7.62 NATO. This precision-machined steel adapter interfaces with suppressors featuring the universal 1.375×24 HUB mounting system. The Inconel Black finish resists corrosion and withstands demanding field conditions.
B&T’s Lightweight HUB direct thread adapters provide a straightforward suppressor mounting solution that bypasses quick-detach mechanisms entirely. The direct thread design eliminates moving parts and failure points—attachment requires only hand-tightening before firing. Whether outfitting a precision rifle or duty platform, the SD-145550 delivers reliable performance through robust construction and simple installation.






