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