The B5 Systems Enhanced SOPMOD Stock (part no. SOP-1123) is a collapsible AR-15 buttstock finished in gray, sold by B5 Systems. Built around the profile of the military SOPMOD buttstock, it slides on a mil-spec diameter receiver extension and locks at multiple positions, letting a shooter adjust length of pull for their build, body armor, or shooting position. Because it is sized for mil-spec rather than commercial-spec tubes, it will not fit a commercial-diameter buffer tube without a different stock. Finished in gray, it gives an AR-15 a modern, non-standard color option apart from black or FDE. As part of B5 Systems’ Enhanced SOPMOD line, it gives an AR-15 the recognizable SOPMOD stock silhouette in a modern collapsible format.

Key Specifications

• Uses a collapsible design, adjustable across multiple length-of-pull positions.
• Built for mil-spec diameter receiver extensions.
• Finished in gray for a distinct look apart from black or FDE.
• Follows the Enhanced SOPMOD stock silhouette.

Frequently Asked Questions

Does this stock fit a commercial buffer tube? No, it is built for mil-spec diameter receiver extensions specifically.

Can I adjust the length of pull? Yes, it is collapsible and locks at multiple positions along the receiver extension.

Buy the B5 Systems Enhanced SOPMOD Stock

Give your mil-spec AR-15 build the SOPMOD silhouette with this B5 Systems stock in gray. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse our rifle stocks selection for more B5 Systems stocks.