The MA Bolt Carrier Group - Auto Version - for your M4 or AR15. Machined to USGI specifications. This M16/M4 Carrier includes the proper Mil-Spec Gas Key. The Gas Key Heat Treated per USGI specifications. The Gas Key is secured to the Carrier with Vibra-TITE - 54110 & OCKS Fasteners, properly staked per Military-Specifications. These properly hardened parts insure a strong staking and proper Gas System functioning. The Bolt Assembly is machined from 9310, Shot Peened for increased strength and includes Tool Steel machined Extractor and Ejector, Sprinco 5-Coil Extractor spring, Sprinco Ejector Springs and is High Pressure Tested and Magnetic Particle Inspected.
- M16 8620 Tool Steel Carrier
- Dickbutt Logo Laser Engraved
- C158 Bolt
- Heat Treated
- Shot Peened
- HPT Bolt - High Pressure Tested
- MPI Bolt - Magnetic Particle Inspected
- S7 Tool Steel Extractor
- Sprinco 5-Coil Extractor Spring
- Sprinco Ejector Spring
- 8620 gas key hardened to USGI Specifications
- OCKS (Optimized Carrier Key Screws) Fasteners
- Key Staked Per Mil-Spec using Vibra-TITE - 54110
- Firing Pin is precision machined from 8640 Steel and Nitrided for corrosion resistant.
- 8620 Cam Pin with directional dick lasered on
- Machined to USGI Specifications
- H&M Black Nitride finish
- Bolt Comes Pre-Lubed with our house blended lube
- FREE GAS RINGS FOR LIFE
The warranty is NOT transferrable and is only valid to the original purchaser.
Each BCG is individually test fired (3rds of ARMSCOR 223REM 55GR) BCG will ship as is, BCG was lubed and might be dirty from the test firing procedure.
The Modern Armory Bolt Carrier Group is proudly MADE IN THE USA by hard working American men and women.
*Lifetime Guarantee covers manufacturing defects in materials and workmanship, regardless of the age of the product, but it does not cover normal wear and tear. Wear and tear is damage that naturally and inevitably occurs as a result of normal use.
ITAR: International Traffic in Arms Regulations Controlled