36 Piece Case of 5.56 Nickel Boron Bolt Carrier Groups (BCG)

36 Piece Case of 5.56 Nickel Boron Bolt Carrier Groups (BCG)

Product Specs:

• .223/5.56 NATO
• Nickel boron finish
• M16 cut
• 9310 steel carrier
• Carpenter 158 steel bolt
• 4140 steel extractor
• MIL-SPEC O-ring
• MIL-SPEC gas rings
• 4140 steel cam pin
• 8740 steel firing pin with hard chrome finish
• Magnetic particle inspected
• Proudly made in the U.S.A.

**Comes as a 36 piece case**