STAG 15 BCG - Bolt Carrier Group - AR15 - 5.56/.223/300 BLK - Nickel Boron - Left Handed

This bolt carrier assembly is designed to work with any AR-15 rifle, upper half, or barrel designed for left hand ejection in the 5.56/.223 caliber. The nickel boron coating has increased lubricity and a low friction co-efficient; therefore, the life expectancy of a firearm will be greatly increased due to reduced friction wear.