BCM Bolt Carrier Group (MPI) – Auto BCG

$165.00

Upgrade your AR15, M16, or M4 with the BCM® Complete Bolt Carrier Group (Auto BCG). Designed for unmatched durability and precision, this BCG is machined to USGI specifications, making it the perfect choice for those seeking reliability and superior functionality in their firearm.

BCM® Bolt Carrier Group (MPI) – Auto BCG: Built for Performance

Key Features

Parkerized Exterior & Chrome-Lined Interior:
The exterior is parkerized for corrosion resistance, while the interior is chrome-lined for seamless operation and longevity.
Mil-Spec Gas Key:
- Chrome-lined and heat-treated to GI standards.
- Secured with Grade 8 fasteners and properly staked for effective gas system performance.
High-Quality Bolt Assembly:
- Made from Mil-Spec Carpenter No. 158® steel for superior strength.
- Shot-peened for added durability.
- Includes a tool steel extractor and ejector, along with a BCM Extractor Spring for reliable cycling.
HPT & MPI Tested:
Each bolt carrier group undergoes High-Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) to ensure it meets rigorous quality and safety standards.
Pre-Tested for Reliability:
Every BCM BCG is test-fired to verify performance. Note that handling marks may be present due to stringent quality control procedures.

Performance and Compliance

ATF-Compliant:
M16 bolt carriers, including this BCM model, are legal to use in semiautomatic AR15 rifles. They are not classified as machine gun parts under the GCA or NFA and are not intended for weapon conversion.
Optimized for Functionality:
Ideal for maintaining gas system efficiency and ensuring reliable performance in all shooting scenarios.

Why Choose BCM® Bolt Carrier Group?

Whether you’re a tactical professional, competitive shooter, or firearms enthusiast, the BCM® Bolt Carrier Group (Auto BCG) delivers the reliability and precision needed for optimal firearm performance.