Rosco Manufacturing , Rosco Ros-bcg-001 556/300blk Melonite Blt Carrier

These 5.56/300 blk bolt carrier groups are melonited, full-auto rated, are properly staked, and the bolts are matched to the barrel.The rosco melonited bolt carrier groups are designed to meet the modern-day carbine shooters requirements.

Finish: Black Melonite
Material: Stainless Steel