B5 Systems SOPMOD Buttstock Mil-Spec MultiCam Black AR-15
B5 Systems
$121.60
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B5 Systems
B5 Systems SOPMOD Buttstock Mil-Spec MultiCam Black AR-15
The B5 Systems SOPMOD Buttstock in Mil-Spec MultiCam Black brings military-grade engineering to your AR-15 build, combining the battle-tested Crane NSWC SOPMOD design with modern ergonomic refinements trusted by special operations professionals and serious shooters alike.
- Overmolded steel anti-rotation QD sling mounts resist torque and prevent wobble under load
- Color-matched steel hardware delivers a clean, cohesive MultiCam Black aesthetic
- No-slip cushioned buttpad absorbs recoil and maintains a firm shoulder position
- SureGrip stock latch provides a positive, rattle-free lock on mil-spec carbine extensions
- Dual water-resistant storage compartments keep batteries, tools, or essentials protected
- Proudly made in the USA from mil-spec materials and finishes for long-term durability
Who This Is For
The B5 Systems SOPMOD is built for AR-15 owners who demand more than a basic collapsible stock — whether you're a competitive shooter seeking a stable cheek weld, a home defender who runs a sling setup, or a tactical enthusiast who wants a mil-spec stock that performs as hard as it looks. It fits any standard mil-spec carbine receiver extension, making it a straightforward upgrade for most AR-15 platforms.
Specifications
| Brand | B5 Systems |
|---|---|
| Model | SOPMOD Buttstock |
| Color / Finish | MultiCam Black |
| Buffer Tube Compatibility | Mil-Spec Carbine Receiver Extension |
| Sling Mount Type | Overmolded Steel Anti-Rotation QD & Fixed |
| Storage Compartments | Dual Water-Resistant |
| Hardware | Color-Matched Steel |
| Buttpad | No-Slip Cushioned |
| Stock Latch | SureGrip |
| Construction | Mil-Spec Materials & Finishes |
| Country of Origin | USA |
| Platform | AR-15 |
Frequently Asked Questions
Will this stock fit my AR-15's buffer tube?
The B5 Systems SOPMOD Buttstock is designed specifically for mil-spec carbine receiver extensions (buffer tubes). It will not properly fit commercial-spec buffer tubes, which have a slightly larger diameter. If you're unsure which spec your rifle uses, mil-spec tubes are typically made from 7075 aluminum and are more common on quality AR-15 builds. Check your current stock or buffer tube packaging to confirm before ordering.
Does the SOPMOD stock work with standard QD sling swivels?
Yes — the overmolded steel QD sling mounts on the B5 SOPMOD are compatible with standard 1.25" push-button QD swivels. The anti-rotation design keeps the mount from spinning under tension, which is especially valuable during dynamic sling use. Fixed loop sling mounts are also integrated for users who prefer a traditional sling attachment method.
What can I store in the compartments, and are they truly waterproof?
The dual compartments are water-resistant (not fully waterproof) and sized to hold small but essential items like CR123 or AA batteries, a folded cleaning patch, a spare bolt pin, or a small multi-tool. They're an excellent solution for keeping mission-critical gear directly on your rifle. For long-term moisture exposure, consider using a small zip-lock bag inside the compartment for added protection.
