Description
The B5 Systems Enhanced SOPMOD takes the original NSWC Crane SOPMOD buttstock design and dresses it up with the features serious AR owners keep asking for. B5 won a U.S. Army contract to produce this stock, so what you're getting isn't a knockoff of the real thing. It is the real thing, offered here in MultiCam for anyone who wants their carbine to match a coordinated setup. It slides onto any mil-spec diameter receiver extension and locks up tight, with users regularly noting there's no wobble or play once it's seated.
What Sets the Enhanced SOPMOD Apart
The standout feature here is comfort behind the rifle. The wide, ergonomic cheek weld gives you more surface area than a bargain M4-style stock, which helps you settle into the same spot behind your optic shot after shot. That consistency is what keeps your eye aligned and your groups tight. The non-slip cushioned buttpad stays put on your shoulder instead of sliding around, and the suregrip stock latch is easy to work even with gloves on.
Storage and Sling Options Built In
Two water resistant storage compartments are molded right into the stock, giving you a place to stash spare batteries, a bore snake, or other small essentials. Worth knowing up front: the stock comes off the buffer tube to access the compartments, so plan on storing gear you won't need to grab mid-string. For carry, the SOPMOD runs overmolded steel anti-rotation QD sling mounts plus fixed mounts, so you can set up a single or two-point sling however you like.
Built From Mil-Spec Materials
The whole thing is made from mil-spec materials and finishes with color-matched steel hardware, and it's proudly made in the USA. Installation is straightforward for most AR owners since it drops onto a standard mil-spec buffer tube with no proprietary parts required. Cleanup is nothing more than a wipe down with a damp cloth. If you want a proven, comfortable stock that can take a beating and look sharp doing it, this one earns its keep.
Key Specifications
- Manufacturer: B5 Systems
- Model: Enhanced SOPMOD
- Manufacturer Part Number: SOP-1078
- UPC: 814927020597
- Color: MultiCam
- Product Type: Collapsible Buttstock
- Fitment: Mil-Spec AR-15 receiver extension
- Sling Mounts: Overmolded steel anti-rotation QD plus fixed mounts
- Storage: Dual water resistant compartments
- Buttpad: Non-slip cushioned
- Length: 7.4 in
- Materials: Mil-spec materials and finishes
- Country of Origin: USA
What’s Included
- B5 Systems Enhanced SOPMOD stock in MultiCam
Frequently Asked Questions
Does the Enhanced SOPMOD stock come with a buffer tube?
No, this listing is for the stock only and does not include a receiver extension or buffer tube. It's designed to slide onto a standard mil-spec diameter buffer tube, so you'll want to have one already installed or pick one up separately. If you're building from scratch, plan on a mil-spec carbine buffer tube assembly to go with it.
Will the B5 SOPMOD fit a commercial-spec buffer tube?
This stock is built for mil-spec diameter receiver extensions, which run slightly smaller than commercial-spec tubes. Trying to force it onto a commercial tube usually won't work because of that size difference. Measure your tube or check your build before ordering, and if you have a commercial setup, swapping to a mil-spec tube is an easy fix.
How do you access the storage compartments on the SOPMOD stock?
The two water resistant compartments are molded into the body of the stock, and you'll need to slide the stock off the buffer tube to open them. Because of that, they work best for gear you won't need to reach for in the middle of shooting, like spare batteries or a small cleaning tool. It's handy backup storage rather than a grab-and-go pouch.
Is this the same SOPMOD stock used by the military?
Yes, B5 Systems won a U.S. Army contract to produce the SOPMOD buttstock, so this is the genuine article rather than a lookalike. The design traces back to NSWC Crane and was originally developed for Special Operations use before reaching the civilian market. This MultiCam version carries the same features and mil-spec construction.




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