B5 Systems SOPMOD Stock Mil-Spec AR-15 OD Green
B5 Systems
$95.00
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B5 Systems
B5 Systems SOPMOD Stock Mil-Spec AR-15 OD Green
The B5 Systems SOPMOD Stock in OD Green brings battle-proven design and mil-spec construction to your AR-15 build, delivering the ergonomics and durability trusted by military professionals and serious shooters alike.
- Ergonomic cheek weld geometry for consistent, comfortable sight alignment
- Color-matched steel hardware for a clean, professional OD Green finish
- Overmolded steel anti-rotational QD sling mounts prevent unwanted rotation under load
- No-slip cushioned buttpad absorbs recoil and stays planted on your shoulder
- Suregrip stock latch ensures positive, rattle-free lockup on carbine buffer tubes
- Dual water-resistant storage compartments keep batteries or essentials protected in the field
Who This Is For
The B5 Systems SOPMOD Stock is ideal 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-defense rifle builder wanting a rugged and functional platform, or a mil-spec enthusiast building a faithful SOPMOD-spec carbine. Its OD Green colorway pairs seamlessly with FDE, black, and green furniture for a cohesive, professional look.
Specifications
| Brand | B5 Systems |
|---|---|
| Model | SOPMOD Stock |
| Color | OD Green |
| Buffer Tube Compatibility | Mil-Spec Carbine Receiver Extension |
| Sling Mount Type | QD (Quick Disconnect) Anti-Rotational + Fixed |
| Storage Compartments | Dual Water-Resistant |
| Hardware | Color-Matched Steel |
| Buttpad | No-Slip Cushioned |
| Material | Mil-Spec Polymer & Steel |
| Country of Origin | USA |
Frequently Asked Questions
Will this stock fit my AR-15's buffer tube?
The B5 Systems SOPMOD Stock is designed to fit mil-spec carbine receiver extensions (buffer tubes). It is not compatible with commercial-spec buffer tubes, which have a slightly larger diameter. Before purchasing, verify that your lower receiver or existing buffer tube is mil-spec diameter — most quality AR-15 lowers use mil-spec tubes, but it's worth confirming with your manufacturer.
What can I store in the compartments, and are they truly waterproof?
The dual compartments are rated as water-resistant (not fully waterproof), making them well-suited for storing CR123 batteries, a small flashlight, earplugs, or other compact essentials. They'll hold up in rain or wet conditions, but submersion is not recommended. The compartments are sized for common field accessories, keeping your kit consolidated on the rifle itself.
How does the B5 SOPMOD compare to a standard M4 stock?
The B5 Systems SOPMOD significantly improves on the basic M4 stock in several ways: it features a higher, more ergonomic cheek weld that works better with optics, anti-rotational QD sling mounts (versus fixed loops only), a cushioned non-slip buttpad for improved recoil management, and practical onboard storage. It retains the same mil-spec buffer tube compatibility, so it's a direct drop-in upgrade with no additional modifications required.
