Replacement Bolt Gas Rings for AR-15 / M16
The three Gas Rings on your AR-15 or M16 Bolt are critical for maintaining proper gas system pressure and keep your rifle functioning as designed. Gas rings are a critical wear item so any time you experience performance issues with your rifle, its worth replacing them. Three are required, and when installing, make sure to space the ring gaps 120 degrees apart around the bolt body to minimize gas pressure loss.
Set of 3