Rosco Manufacturing Bolt Carrier Group 5.56 NATO/300 BLK Melonite Black

This Rosco Manufacturing bolt carrier group is a replacement component for AR-15 pattern rifles, designed to cycle 5.56x45mm NATO and 300 Blackout ammunition. It is the part that carries the cartridge into the chamber, locks the bolt, and extracts and ejects the spent case during each cycle of operation.

The carrier is manufactured from stainless steel and finished in Black Melonite, a nitride treatment that gives the assembly its black color. It is listed as a single carrier group compatible with AR-15 platform rifles chambered in either caliber.

Check that your upper and lower receiver are AR-15 pattern before installation, as the group is intended only for that platform.

• Brand: Rosco Manufacturing
• Type: Bolt Carrier Group
• Platform: AR-15
• Calibers: 5.56x45mm NATO, 300 Blackout
• Material: Stainless Steel
• Finish: Black Melonite
• Color: Black