KAK Industry AR-15 M16 Profile Bolt Carrier Group – 5.56/.300 BLK

The KAK Industry AR-15 M16 Profile Bolt Carrier Group is a mil-spec replacement carrier designed for reliable cycling in 5.56 NATO and .300 Blackout chambered AR-15 rifles. The M16 profile carrier features a full-auto weight design that increases bolt velocity and dwell time, improving reliability with suppressed firearms, short-barreled rifles, and lower-powered ammunition. This BCG is built to military specifications for shooters who demand consistent performance across a range of loads and barrel lengths.

Machined from 8620 steel with a Carpenter 158 steel bolt, this carrier group features a black Chromium Lined Phosphate (CLP) finish for corrosion resistance and ease of cleaning. The bolt is properly staked, MPI tested, and shot peened for durability. Installation is straightforward drop-in—no fitting or gunsmithing required. This BCG arrives ready to install in any mil-spec AR-15 upper receiver.

• Part Type: M16 Profile Bolt Carrier Group
• Compatible Firearms: AR-15 rifles chambered in 5.56 NATO / .300 Blackout
• Material: 8620 steel carrier, Carpenter 158 steel bolt
• Finish: Black Chromium Lined Phosphate (CLP)
• Installation: Drop-In
• Includes: Bolt carrier, bolt assembly, cam pin, firing pin, firing pin retaining pin