Luth-AR BT-01-3P Bolt Gas Rings .223/5.56mm Silver AR-15 3 Pack

The Luth-AR BT-01-3P Bolt Gas Rings are a 3-pack of replacement split gas rings sized for the standard .223 Remington / 5.56x45mm NATO AR-15 bolt. Designed to seal the bolt against the carrier key during cycling, these rings keep propellant gases flowing through the gas tube and out the carrier vents while preventing excess carbon blowback into the upper receiver and bolt cavity.

Sold as a 3-pack in a silver finish, the BT-01-3P lets you swap in a fresh set of rings during a bolt rebuild or as part of routine bolt maintenance. The rings install in the standard three grooves on any mil-spec or aftermarket .223/5.56mm AR-15 bolt, making them a useful bench-stock or range-bag spare for builders and armorers alike.