Lantac USA AR-15 M-SPEC Bolt Carrier Group

The Lantac USA® AR-15 M-SPEC® Bolt Carrier Group (BCG) is precision machined to Mil-Spec dimensions and tolerances. The carrier is a full auto style and features increased mass and is constructed from 8620 steel, case hardened, and hard turned/ground so internal dimensions are exact Mil-Spec specifications. Plus, the carrier features a corrosion-resistant QPQ nitride finish. The bolt is machined from Carpenter 158 or 9310, shot peened, and hard turned per Mil-Spec and this BCG features a Lantac CP-R360 domed head cam pin that is precision machined from 17-4PH stainless steel and hand polished and hardened to H900 condition. Backed by a lifetime warranty. Made in USA.