STNGR 5.56/.300 BLK Phosphate - Chrome Lined M16 Bolt Carrier Group - C158 Bolt

C158 Bolt and Phosphate Coating: Battle-Tested Durability and Superior Performance Featuring a phosphate exterior for rugged wear resistance and a chrome-lined interior for smooth, consistent cycling, this BCG design is battle proven. Made to military specifications, this bolt carrier is made exactly like those currently used in U.S. military M4 rifles. The phosphate coating and [...]