Bcm Gfsmod2Spmdblk Stock Mod 2 Sopmod Black Widebody

The BCM Mod 2 SOPMOD stock is a purpose-built replacement for the standard M4 carbine stock, designed to combine ergonomic refinement with the kind of durability that withstands real-world use. Whether you're running a patrol rifle, a home-defense AR, or a precision shooter's platform, this Bravo Company stock upgrades your weapon's handling and comfort without the complexity of proprietary systems. The Mod 2's patented semi-clubfoot profile reshapes the shoulder interface for improved control in prone shooting while keeping the design snag-free—no sharp edges to catch slings, body armor, or tactical gear during transitions or vehicle ops.

This particular stock kit bundles the Mod 2 with a MK2 Receiver Extension (approximately 3/4" longer than standard carbine length), a MK2 Mod 1 buffer, a castle nut, and a QD end plate, so you have a complete bolt-on upgrade path. The extended receiver tube pairs well with intermediate-length AR platforms and gives you an extra quarter-inch of adjustment range across eight positions—handy when you're layering body armor or need fine-tuned length-of-pull for different shooting techniques. The removable buttpad swaps between a rubberized surface for traditional hold and a diamond-textured hard pad for high-ready weapon handling, so you can tailor the stock to your mission without tools.

Built in Hartland, Wisconsin, the Mod 2 carries BCM's reputation for American manufacturing and materials that don't cut corners. The ambidextrous QD interface, the VBOST (Vehicle Borne Operations Sling Tab) attachment points, and two additional web-sling slots give you flexibility in how you rig your rifle—critical if you're rotating between vehicle carry, slung position, and ready drills. This is the kit for shooters and operators who want a stock that stays out of the way, adapts to their setup, and simply works.

Key Features

• Patented semi-clubfoot design optimized for prone shooting and ergonomic control
• Mil-Spec compatible; fits Mil-Spec carbine receiver extensions and optimized for extended tubes (MK2, AR10, A5)
• Eight-position adjustment for length-of-pull customization
• Removable, swappable buttpad (rubberized or diamond-textured options)
• Ambidextrous QD rotation-limited interface and VBOST sling attachment point
• Two additional web-sling attachment slots for modular carry options
• Complete kit includes MK2 Receiver Extension, MK2 Mod 1 buffer (approx. 3.8 oz), castle nut, and QD end plate
• Made in the USA with aircraft-grade materials

Specifications

Frequently Asked Questions

Will this stock work on my AR-15?

Yes, if your AR uses a Mil-Spec carbine receiver extension. The included MK2 Receiver Extension is approximately 3/4" longer than standard carbine length and is optimized for extended-tube platforms (MK2, AR10, A5). You'll need to verify your lower receiver is Mil-Spec diameter to ensure proper fit and function.

What's included in this kit?

The kit includes the BCM Mod 2 SOPMOD stock (black), a BCM MK2 Receiver Extension (7075-T6 aluminum, 8-position), a MK2 Mod 1 buffer, a Mil-Spec M16A4 rifle action spring, a BCM EPM4 end plate with QD swivel mount, and a castle nut locking hardware.

Can I change the buttpad?

Yes. The Mod 2 features a removable buttpad that you can swap out without tools. You can choose between a rubberized surface for traditional shouldering or a diamond-textured hard pad optimized for high-ready weapon handling, depending on your shooting style and conditions.

Is this stock good for vehicle operations or sling carry?

Absolutely. The stock includes a VBOST (Vehicle Borne Operations Sling Tab) attachment point designed to retain slings when the weapon is "S-folded" against the stock, plus two additional web-sling attachment slots. The ambidextrous QD interface keeps your sling interface flexible and snag-free.