The BCM M4 MOD 0 carbine is an AR-15 style, direct gas impingement, semi-automatic rifle that is widely recognized as a benchmark in the firearms industry. BCM surpasses standard expectations by utilizing components and parts that exceed mil-spec requirements, which are often considered a baseline standard. The company is dedicated to quality assurance by conducting individual inspections of every component incorporated into their rifles. Unlike other manufacturers that may reduce costs by batch testing parts, BCM ensures the delivery of a high-quality rifle that meets the expectations of discerning customers. Choose a BCM AR-15 semi-automatic rifle for superior performance and reliability.

The receiver is manufactured from 7075-T6 aluminum forgings and is hardcoat anodized in accordance with MIL-A-8625F, type III, class 2 specifications
M4 feed ramp flat top featuring laser-engraved T-markings
Carbine length gas system
Fabricated from mil-spec carpenter No. 158 steel
HPT (High-Pressure Tested) and MPI (Magnetic Particle Inspected) for quality assurance
Surface treated via shot peening
Tool steel extractor with BCM extractor spring
Extractor insert, black
Chrome-lined carrier (full-auto profile)
Gas key - chrome-lined and hardened in accordance with USGI specifications, featuring staked-grade 8 fasteners compliant with mil-spec standards
Installation of a low shelf for RDIAS - the installation of a registered drop-in auto sear (RDIAS) enables the firearm to operate in full automatic mode
Low shelf for accuwedge application
Fire control settings are designated as safe and SEMI
BCM mil-spec 7075-T6 receiver extension
Staked M4 lock nut - a precision-engineered fastener designed to prevent loosening under vibration and torque, ensuring secure assembly in mechanical applications
USGI H-buffer configuration - comprises one USGI-grade tungsten weight and two steel weights
The barrel is constructed from independently certified mil-spec 11595E steel and features a manganese phosphate finish applied to the entire surface
16 inches standard government profile barrel with a 1:7 twist rate, featuring an M4 feed ramp barrel extension
USGI 5.56x45mm with chrome-lined bore and chamber
HPT/MPI (high-pressure test/magnetic particle inspection) in accordance with mil-spec standards

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These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Magazines will be removed from firearms when shipping to states with magazine capacity restrictions.

California 10+ Round Magazine Buyers: PSA values your freedom and constitutional rights above all else. However, PSA will not accept new orders nor will ship any order until the Ninth Circuit Federal Court of Appeals mandate becomes finalized. Once this mandate is finalized, we will start accepting new orders and ship 10+ round magazines to California Customers.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).