The B5 Systems AK stock 4.5mm variant offers a drop-in upgrade for the factory 4.5mm folding stock and mounts by the factory 4.5mm pin to the folding trunnion. It features improved ergonomics an adjustable length of pull QD/fixed sling mounts optic rail cutout 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 – Mounts to the factory folding trunnion via the 4.5mm pin. Due to the tolerance range of various manufacturers some fitment may be required. – Available in Black OD Green and Plum – Made in the USA – specs – Weight: 12.5 oz – Length: 9 in – Width: 1.2 in – Height: 4.33 in