B5 Systems has taken the venerable design of the Crane NSWC designed SOPMOD buttstock and incorporated the features sought by military professionals and firearm enthusiasts. The Enhanced SOPMOD features color matched steel hardware, one piece anti-rotation quick disconnect sling mounts, no slip cushioned buttpad, sure grip stock latch, and dual water resistant storage compartments. The Enhanced SOPMOD is made of Mil-Spec materials and finishes. Proudly made in the USA. Ergonomic cheek weld Color matched steel hardware Dual water resistant storage compartments Fixed sling mounts and steel anti-rotational QD mounts Cushioned non-slip buttpad with built in M4 Multitasker tool holder Sure grip stock latch Made of MIL-SPEC materials and finishes Fits MIL-SPEC carbine receiver extensions MADE IN THE USA Specifications Weight: 11.80 oz Length: 7.43 in Width: 2.4 in Height: 4.93 in