The Sprinco USA Bolt Ring/Gas Ring (Sprinco part no. 84398) is sized for AR-10 pattern .308 bolts and sold nine rings to a pack, enough for three full three-ring sets. Gas rings seal pressure behind the bolt during cycling, and worn or flattened rings are a common, low-cost cause of short-stroking or sluggish bolt carrier group cycling.

Key Specifications

• sized for AR-10 pattern .308 bolts distinct from the smaller AR-15 gas ring diameter.
• sold 9 rings to a pack enough for three complete three-ring sets.
• seals gas pressure behind the bolt for reliable cycling; a common, low-cost wear part.

Frequently Asked Questions

What platform is this sized for? It is sized for AR-10 pattern .308 bolts, not the smaller AR-15 bolt.

How many rings do I need per bolt? AR-pattern bolts typically use three gas rings; this 9-pack covers three complete sets.

Buy the Sprinco AR-.308 Gas Rings

Keep a .308-pattern bolt sealing gas pressure properly with fresh Sprinco gas rings. Browse more of our rifle parts selection and order from our Lubbock, Texas gun shop for fast shipping.