Rock River Arms RRA AR-15 M4 Bolt Gas Ring AR15
Replaces worn rings, causing a leak from the gas expansion chamber in the carrier. This AR15 M4 Carbine accessory solves the problem of gas ring leakage. This solves a lot of problems with short stroking (failure to eject fired cartridge and or failure to pick up a fresh round from the mag. 3 RINGS ARE REQUIRED TO MAKE A COMPLETE REPLACEMENT SET. PRICE IS PER INDIVIDUAL RING. ORDER 3 FOR A COMPLETE REPLACEMENT SET. MUST HAVE SPARE ITEM!