Luth-AR 308-BT01H Helical 1-Piece Gas Ring .308

The Luth-AR 308-BT01H is a helical one-piece gas ring purpose-built for AR-10 pattern rifles chambered in .308 Winchester / 7.62x51mm NATO. It is used to seal the gas in the gas tube and prevent gas from leaking, keeping the rifle's gas system operating as designed and ensuring reliable cycling shot after shot.

As a single-piece helical design, the 308-BT01H replaces the multi-piece gas ring sets used on AR bolts with one continuous unit - no loose springs or half-rings to lose during disassembly or cleaning. The ring is manufactured from high-grade spring steel for exceptional durability and resistance to wear, even under high round counts.

The 308-BT01H is Luth-AR's dedicated .308 / 7.62 version of their helical gas ring line, designed specifically for the AR-10 bolt. Luth-AR part number 308-BT01H; UPC 812058030676.