The Lantac M-SPEC 7.62/.308 Bolt Carrier Group (brand part no. 01MSPEC762NITBCG) is precision machined to military spec dimensions and tolerances for DPMS-pattern .308 rifles. The full auto style carrier carries increased mass and is manufactured from 8620 steel, case hardened and hard turned so its internal dimensions match mil-spec exactly. Lantac finishes the carrier in QPQ nitride rather than a standard phosphate coating, adding corrosion resistance and durability well beyond a typical BCG. The bolt itself is machined from Carpenter 158 or 9310 steel, shot peened and hard turned per military spec, and every unit is fitted with a Lantac CP-R360-H domed cam pin, precision machined from 17-4PH stainless steel and hardened to H900 condition to cut friction inside the upper receiver. Backed by a lifetime warranty and made in the USA, this Lantac USA BCG is built for budget-conscious .308 builds that still demand mil-spec reliability.

Key Specifications

• Chambered for 7.62 NATO/.308 Winchester on DPMS-pattern rifles.
• Carrier machined from 8620 steel, case hardened and hard turned to mil-spec dimensions.
• Full auto style carrier with increased mass for smoother, more consistent cycling.
• Finished in QPQ black nitride rather than standard Type M phosphate.
• Bolt is machined from Carpenter 158 or 9310 steel, shot peened and hard turned per mil spec.
• Includes a Lantac CP-R360-H domed cam pin machined from 17-4PH stainless steel.
• Cam pin is hand polished and hardened to H900 condition to reduce internal friction.
• Overall assembly length runs approximately 11 inches, matching standard AR10/DPMS carriers.
• Backed by a lifetime warranty and made in the USA.

Frequently Asked Questions

What rifles is this BCG compatible with? It is built to fit DPMS-pattern AR10-style rifles chambered in 7.62 NATO/.308 Winchester.

Why QPQ nitride instead of phosphate? QPQ nitride adds corrosion resistance and durability beyond a standard Type M phosphate finish while reducing friction for smoother cycling.

Is this a full-auto rated carrier? The carrier uses a full auto style profile with increased mass for smoother cycling, but the complete BCG is sold for semi-auto rifle builds.

Buy the Lantac M-SPEC 7.62/.308 Bolt Carrier Group – QPQ Black Nitride

Order the Lantac M-SPEC BCG from Lantac USA through our AR10 bolts selection, shipped fast from our Lubbock, Texas gun shop.