LANTAC USA Enhanced BCG 5.56/.223 Black Nitride AR-15 Bolt Carrier Group

The LANTAC USA Enhanced Bolt Carrier Group (E-BCG) is a precision-machined .223 Remington / 5.56 NATO BCG built for serious AR-15, M4, and M16 platforms. Designed with increased mass for improved lock time and reliable cycling, this full-auto-rated carrier is engineered to drop into both semi-automatic and select-fire rifles without compromise.

The carrier is CNC-machined from 8620 steel and finished in a low-friction, corrosion-resistant Black Nitride (salt bath nitride) coating. The bolt is shot peened and manufactured from Carpenter 158 or 9310 steel, then Magnetic Particle Inspected (MPI) to ensure structural integrity under hard use. At approximately 11.7 oz, the added mass helps smooth cycling and reduce bolt bounce during rapid fire.

Whether you are building a duty rifle, a precision AR, or simply replacing a worn factory BCG, the LANTAC USA E-BCG delivers the strength, weight, and quality control expected from a premium American-made component. This is a brand-new BCG ready to install in your compatible 5.56mm / .223 AR-pattern upper receiver.