AR 15 Bolt Carrier Groups

Nickel Boron 6.8 SPC / .224 Valkyrie Bolt Carrier Group

Nickel Boron 6.8 SPC / .224 Valkyrie Bolt Carrier Group APOC Armory BCG’s with Bolts made from heavy duty 9310 Alloy Steel and Bolt Carriers from 8620 case-hardening aircraft grade steel. 9310 steel has a high core strength rating, high...

Black Nitride 9mm Bolt Carrier Group For Glock & Colt

Black Nitride AR9 Bolt Carrier Group  Compatibility: GLOCK & COLT - Style Lower Receivers Carrier: MIL-SPEC 8620 Steel Material Fully Heat Treated External M-16 Style Extractor M16 (FULL-AUTO) Compatible QPQ - Salt Bath...

Nickel Boron BCG .223/5.56

5.56/.223/.300 Black Out Full Auto Capable 9310 MPI and HPT Tested bBolt Case Hardened 8620 Carrier 4130 Gas Key Grade 8 Hardware With Proper Staking Gas Key Sealed With Permatex No.3 8740 Hard Chrome Firing Pin Nickel Boron coated For...

Nickel Boron BCG 7.62 By 39

Superior Nickel Boron Coating Extended Firing Pin 9310 MPI and HPT Tested Bolt Case Hardened 8620 Carrier 4130 Gas Key Gas Key Sealed With Permatex No.3 Grade 8 Hardware With Proper Staking 8740 Hard Chrome Firing Pin Proudly Made In The U.S...