The B5 Systems AK Stock 4.5mm variant offers a premium drop-in upgrade for factory 4.5mm folding stocks featuring improved ergonomics adjustable length of pull and enhanced mounting options. Proudly made in the USA of durable composite materials and steel hardware.B5 Systems AK Stock 4.5mm - Plum ColorCollapsible Length of Pull AdjustmentOptic Rail Cutout for enhanced versatilityCushioned Nonslip Buttpad for comfortFixed Sling Mounts and Steel Anti-Rotational QD MountsDurable Composite Material constructionMounts to factory folding trunnion via 4.5mm pinPerfect for AK platform upgrades this stock provides superior ergonomics and functionality while maintaining compatibility with standard 4.5mm folding trunnions. Some fitment may be required due to manufacturer tolerance variations.