B5 Systems SOPMOD Stock Government Model Mil-Spec – AR-15/M4

The B5 Systems SOPMOD Stock Government Model delivers field-proven adjustability and storage without unnecessary bulk. Built to the same specifications issued to military users, this stock provides six positions of length-of-pull adjustment and improves cheek weld consistency across shooting positions. Two waterproof storage compartments keep batteries, cleaning supplies, or spare parts secure and accessible.

Constructed from reinforced polymer with a textured rubber buttpad, the SOPMOD Stock fits all mil-spec carbine buffer tubes and installs with standard takedown pin retention. The Government Model features a streamlined profile compared to enhanced SOPMOD variants while maintaining the same locking mechanism and cheek weld geometry. QD sling swivel attachment points are integrated on both sides.

• Type: Adjustable Carbine Stock
• Compatible Firearms: AR-15, M4, and mil-spec carbine buffer tubes
• Material: Reinforced Polymer with Rubber Buttpad
• Finish: Black
• Adjustable: Yes – 6 Positions
• Installation: Mil-spec carbine buffer tube, standard AR-15 castle nut and end plate required