B5 Systems SOPMOD Mil-Spec AR-15 Buttstock Government Black
B5 Systems
$95.00
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B5 Systems
B5 Systems SOPMOD Mil-Spec AR-15 Buttstock Government Black
The B5 Systems SOPMOD Mil-Spec AR-15 Buttstock in Government Black is the same battle-proven stock that B5 has manufactured for the U.S. Department of Defense since 2011, now available to civilian shooters who demand military-grade quality and ergonomics on their AR-15 builds.
- Crane NSWC-designed SOPMOD stock built to true mil-spec standards
- Ergonomic cheek weld geometry for consistent, repeatable sight alignment
- Color-matched steel hardware resists corrosion and withstands hard use
- No-slip cushioned butt pad absorbs recoil and prevents stock migration
- Dual water-resistant storage compartments for batteries or essentials
- Fixed sling mounts accommodate a wide range of sling configurations
Who This Is For
The B5 Systems SOPMOD buttstock is ideal for serious AR-15 owners, competitive shooters, and tactical enthusiasts who want the same furniture trusted by U.S. military units. Whether you're building a duty-ready carbine, a precision training rifle, or simply upgrading a factory stock, the SOPMOD delivers a no-compromise fit on any mil-spec AR carbine receiver extension.
Specifications
| Brand | B5 Systems |
|---|---|
| Model | SOPMOD Buttstock |
| Color | Government Black |
| Compatibility | Mil-Spec AR carbine receiver extensions |
| Hardware | Color-matched steel |
| Butt Pad | No-slip cushioned rubber |
| Storage | Dual water-resistant compartments |
| Sling Mounts | Fixed, integrated |
| Material | Mil-Spec polymer and steel |
| Country of Origin | USA |
Frequently Asked Questions
Will the B5 Systems SOPMOD buttstock fit my AR-15's buffer tube?
The SOPMOD buttstock is designed to fit mil-spec AR carbine receiver extensions (buffer tubes). It is not compatible with commercial-spec buffer tubes, which have a slightly larger diameter and different taper. Before purchasing, confirm your existing buffer tube is mil-spec diameter — most quality AR-15 lower builds use mil-spec tubes, but commercial-spec is common on some budget rifles.
What can I store in the dual compartments, and are they truly waterproof?
The two storage compartments are water-resistant (not fully waterproof), making them well-suited for keeping small items dry in light rain or field conditions. Common uses include storing CR123 or AA batteries for optics and weapon lights, a spare bolt carrier group component, or a small medical item. They are not designed for submersion.
How does the B5 Systems SOPMOD compare to a standard M4 collapsible stock?
Unlike a standard collapsible M4-style stock, the SOPMOD is a fixed-length stock built around the Crane NSWC design used by U.S. Special Operations forces. It offers a more stable cheek weld, better recoil absorption via the cushioned butt pad, and added utility through its storage compartments and integrated sling mounts — making it a significant ergonomic and functional upgrade over basic collapsible designs.
