The Battle Arms Development Standard Bolt Carrier Group (brand part no. BAD-BCG-M16) is a complete carrier group rated for .223 Rem, 5.56 NATO, and .300 Blackout, finished in black nitride and built for the AR15, M16, and M4 platforms. Battle Arms Development machines the carrier from case-hardened 8620 steel billet and the bolt from shot-peened 9130 steel held to mil-spec dimensions, then verifies every bolt with magnetic particle inspection (MPI) and high-pressure testing (HPT) before it ships. Every wear part, from the gas key to the extractor, is finished to hold up to hard, repeated use.

Key Specifications

• Rated for .223 Rem, 5.56 NATO, and .300 Blackout.
• Bolt carrier machined from case-hardened 8620 steel billet.
• Firing pin made from center-less ground 17-4 H-900 steel.
• Gas key machined from billet 4140 steel with staked grade 8 screws.
• Cam pin made from hardened 4140 steel.
• Black nitride finish for corrosion and wear resistance with minimal lubrication needs.
• Bolt made from shot-peened 9130 steel to mil-spec dimensions.
• Bolt is MPI/HPT tested for safety and reliability.
• Extractor machined from 4140 billet with a manganese phosphate finish for positive grip.

Frequently Asked Questions

What calibers is this BCG rated for? .223 Rem, 5.56 NATO, and .300 Blackout.

Is the bolt tested before shipping? Yes, it is MPI and HPT tested for safety and reliability.

What finish does it use? Black nitride, for corrosion and wear resistance.

Buy the Battle Arms Development Standard Bolt Carrier Group

Drop a fully tested, multi-caliber-rated BCG into your AR15, M16, or M4. Order it from our AR bolt carrier groups selection at our Lubbock, Texas gun shop for fast, direct shipping.