B5 Systems Ar-15 Enhanced Sopmod Stock Collapsible Mil-Spec Multi-Cam

The B5 Systems AR-15 Enhanced Sopmod Stock is a collapsible mil-spec stock designed for shooters who demand serious field performance without compromise. Built to the same standard as stocks currently used by U.S. military forces, this polymer stock is engineered for M4-type receiver extensions and combines tactical durability with practical comfort features that matter when you're running drills, hunting, or deploying from vehicles. Whether you're a precision rifle competitor fine-tuning your setup, a hunter looking for a reliable platform, or a tactical shooter who values proven gear, the Enhanced Sopmod delivers the kind of dependability that comes from real-world military adoption.

The improved cheekweld design is built with consistency in mind—you get a repeatable sight picture and better shoulder contact cycle after cycle, which translates to tighter groups and faster target transitions. The Sure-Grip stock latch makes length-of-pull adjustments intuitive and solid, so you can dial in your fit quickly without fiddling. Two integrated waterproof storage compartments run the length of the stock, giving you protected space for batteries (fits 2 AA or 3 CR-123) or small essentials you want to keep dry and accessible.

The streamlined contours won't snag on tactical gear, sling attachments, or brush—a small detail that pays dividends in the field. The anti-slip rubber recoil pad keeps the stock seated firmly on your shoulder through recoil, improving control and reducing fatigue during longer shooting sessions. You get a black stainless steel quick-detach swivel mount and two molded sling attachment slots (1¼" wide each), making it straightforward to configure the stock for your preferred carry and deployment method.

Key Features

• Military-grade durability and design, proven in operational use
• Improved cheekweld geometry for consistent sight picture and shooting comfort
• Two waterproof storage compartments for batteries or small gear
• Streamlined profile resists snagging on equipment and vegetation
• Sure-Grip latch for fast, intuitive length-of-pull adjustment
• Anti-slip rubber recoil pad anchors the stock securely to the shoulder
• Black stainless steel QD swivel mount included
• Two molded 1¼" wide sling attachment slots
• Mil-spec receiver extension compatibility (M4-type)

Specifications

Frequently Asked Questions

Will this stock fit my AR-15?

Yes, if your rifle uses a standard M4-type mil-spec receiver extension. The Enhanced Sopmod is designed for direct compatibility with mil-spec tube dimensions. If you're unsure about your receiver extension, verify it's a mil-spec profile before ordering.

What can I store in the compartments?

The two waterproof storage compartments running along the length of the stock hold either 2 AA batteries or 3 CR-123 batteries. They're sealed to keep contents dry in field conditions, making them ideal for storing spares to power optics, lights, or other tactical gear.

Does this come with sling attachments?

The stock includes a black stainless steel quick-detach swivel mount and two molded 1¼" wide sling slots built into the polymer. This gives you multiple attachment options to configure your sling setup according to your preference.

Is this the same stock used by the military?

The Enhanced Sopmod is currently employed by U.S. military forces and is manufactured to that same standard. It's built with proven field performance and durability in mind.