Battle Arms Development Enhanced Bolt Carrier Group for AR-15 M16 Profile – Black Nitride (BAD-EBCG-M16)

• Enhanced bolt carrier group designed for AR platform rifles supporting reliable cycling and operation
• Bolt carrier machined from 8620 steel and case hardened for durability and wear resistance
• Bolt constructed from 9130 steel shot peened and built to mil spec dimensions
• Includes 4140 steel gas key with grade 8 screws properly staked for secure operation
• Firing pin made from 17 4 H900 steel with centerless ground precision finish
• Black nitride finish enhances corrosion resistance and surface hardness across bolt carrier group components

The Battle Arms Development Enhanced Bolt Carrier Group is a bolt carrier group designed for cycling and chambering operations in AR-15 and M16 rifles.

The Battle Arms Development Enhanced Bolt Carrier Group is constructed with an 8620 steel carrier machined from billet and a 9130 steel bolt with mil-spec dimensions. It includes a 17-4 H-900 steel firing pin, a 4140 steel gas key with properly staked Grade 8 screws, and a 4140 hardened cam pin. The extractor is machined from 4140 billet steel and finished with manganese phosphate for consistent engagement. This product is used for cycling, chambering, and extraction functions in compatible rifle platforms. In standard configurations, the black nitride finish provides a uniform surface while maintaining compatibility with AR-15 and M16 systems for range or field use.