The BCM lower receiver group with MK2 receiver extension and BCMGUNFIGHTER Mod 0 stock in Flat Dark Earth (brand part no. LRG-RMS-STK-MOD-0-FDE) ships as a fully assembled .223 Remington/5.56 NATO-pattern lower, ready to mate directly with a rifle upper. Bravo Company Mfg builds this group around its MK2 receiver extension, which runs roughly 3/4 of an inch longer than a standard 6-position extension, paired with a matching MK2 buffer and a rifle-length M16 action spring for reliable cycling. The BCMGUNFIGHTER Mod 0 stock rounds out the package in a standard-body profile finished in Flat Dark Earth. Among the complete lowers in the AR15 lowers category, this BCM group is built for shooters who want a proven, purpose-matched buffer system out of the box.

Key Specifications

• This lower is chambered for .223 Remington/5.56 NATO-pattern AR-15 builds.
• It ships fully assembled and complete, ready to mate with a rifle upper.
• The group uses BCM’s MK2 receiver extension, roughly 3/4 inch longer than a standard 6-position extension.
• It includes a matching MK2 buffer for the extended receiver extension.
• The group uses a rifle-length M16 action spring for reliable cycling.
• The BCMGUNFIGHTER Mod 0 stock ships installed in a standard-body profile.
• The finish is Flat Dark Earth.
• It is built for semi-automatic AR-15 platforms.
• Machined from forged 7075-T6 aluminum with a Type III Class 2 hardcoat anodized finish.

Frequently Asked Questions

Does this lower ship complete or stripped? It ships complete and fully assembled, ready to mate with a rifle upper.

What makes the MK2 receiver extension different? It runs about 3/4 inch longer than a standard 6-position extension and pairs with a matching MK2 buffer.

What stock is installed? A BCMGUNFIGHTER Mod 0 stock in a standard-body profile, finished in Flat Dark Earth.

Buy the BCM Lower Receiver Group, MK2 Extension & Gunfighter Mod 0 Stock, FDE

A purpose-matched MK2 buffer system and Gunfighter stock give this complete lower a proven foundation right out of the box. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.