The SOPMOD buttstocks were originally developed by NSWC-Crane for use with SOCOM's. SOPMOD Special Operations Peculiar Modification M4A1 carbines. B5 systems, a well-known defense, and an aerospace contractor was selected in 2009 to supply the US Army with SOPMOD stocks. These quality stocks are now available on the commercial market. Featuring sloped sides for a superior cheek weld, watertight battery storage compartments, and a tight fit on mil-spec carbine receiver extension tubes.
Improved cheek weld for a better shooting position.
Watertight battery storage compartments.
Padded buttplate reduces felt recoil and provides a non-slip surface against web-gear and body armor.
Dual quick-detach sling swivel holes.
Made in the USA.