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
- 9310 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 17-4 H900 stainless 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 Cherrybalmz BRB
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.
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.