KAK Industry M16 7.62x39 K-Spec NP3 Bolt Carrier Group – AR-15 Platform

The KAK Industry M16 7.62x39 K-Spec NP3 Bolt Carrier Group is engineered specifically for AR-15 platform rifles chambered in 7.62x39mm. This full-auto profile BCG addresses the unique extraction and feeding demands of the 7.62x39 cartridge in the AR platform, delivering reliable cycling with standard and aftermarket barrels. The K-Spec designation indicates enhanced geometry optimized for this chambering.

Manufactured from 8620 steel with a Carpenter 158 bolt, this BCG features an electroless nickel-PTFE (NP3) coating across all components. NP3 provides permanent lubricity, extreme corrosion resistance, and simplified cleaning compared to traditional phosphate or nitride finishes. The coating reduces friction and carbon buildup without requiring additional lubrication in most conditions. This is a complete assembly ready to install—drop-in compatible with mil-spec AR-15 upper receivers. No gunsmithing required.

• Part Type: Bolt Carrier Group
• Compatible Firearms: AR-15 platform rifles chambered in 7.62x39mm
• Material: 8620 steel carrier, Carpenter 158 bolt
• Finish: NP3 electroless nickel-PTFE coating
• Installation: Drop-in
• Includes: Assembled bolt carrier group with gas key, cam pin, and firing pin