The Enhanced SOPMOD features ergonomic cheek weld, color matched steel hardware, overmolded steel anti rotational QD sling mounts, fixed sling mounts, no slip cushioned butt pad, sure-grip stock latch, and dual storage compartments. The Enhanced SOPMOD is made of Mil-spec materials and finishes, and is offered in standard B5 Systems color options. The Enhanced SOPMOD fits all Mil-spec AR-15 receiver extensions.