Gorilla Machining Ar 15 Bolt Gas Rings steel for .223/5.56 , 7.62x39 , 6.5 grendel , .224 valkyrie (10 Pack)

These bolt gas rings are a great way to keep your AR running smooth. Rings are available in 7.62x39, 5.56 and 300 blackout ETC. Ar 15 Bolt Gas Rings are a must have for any AR builder. The set includes ten rings and is compatible with most calibers. The Ar 15 Bolt Gas Rings are an essential piece of gear for your AR-15. These rings help seal the gas port and keep the gas moving to the bolt carrier group, ensuring proper operation of your weapon. Made from durable steel , these rings are a great replacement or spare set.