The BCM complete widebody lower receiver with MK2 receiver extension and SOPMOD Mod 2 stock in Black (brand part no. LRG-RMS-STK-MOD-2-SPMD-BLK) ships fully assembled, ready to mate directly with a rifle upper. Bravo Company Mfg builds this group around its MK2 receiver extension, roughly 3/4 of an inch longer than a standard 6-position extension, paired with the widebody SOPMOD Mod 2 stock for a broader cheek weld than a standard-body profile. The lower ships complete with all small parts and the buffer system already assembled. Among the complete lowers in the AR15 lowers category, this BCM widebody build is ready to run as soon as it’s paired with an upper.

Key Specifications

• This lower 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.
• The stock is a SOPMOD wide-body Mod 2 profile for a broader cheek weld.
• The finish is Black.
• The stock uses a patented semi-clubfoot design with an ambidextrous, rotation-limited QD sling interface.
• Runs a BCM MK2 Mod 1-T0 buffer weighing approximately 3.8 ounces for reliable cycling.

Frequently Asked Questions

Does this lower ship complete or stripped? It ships complete and fully assembled with the stock installed.

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

What color is this lower? It’s finished in Black.

Buy the BCM Complete Widebody Lower Receiver, MK2 Extension & SOPMOD Mod 2 Stock, Black

A purpose-matched MK2 buffer system and widebody SOPMOD 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.