The B5 Systems AK Stock fixed variant offers a drop in upgrade for the factory fixed stock. It features improved ergonomics, an adjustable length of pull, QD/fixed sling mounts and a cushioned buttpad. Proudly made in the USA of composite materials and steel hardware. Features : Collapsible Length of Pull Adjustment Optic Rail Cutout Cushioned Nonslip Buttpad Fixed Sling Mounts and Steel Anti-Rotational QD Mounts Durable Composite Material Fits standard AKM pattern stamped receivers. Due to the tolerance range of various manufacturers some fitment may be required.