Black River Manufacturing ACX 4.5 Collapsible AK Stock Carbon Fiber. Designed for versatility and reliability this all-aluminum construction ensures durability without sacrificing weight. The 4.5 attachment offers seamless compatibility while the rubber butt pad has a honeycomb texture for the best preformance. Enhance your shooting experience with Black River Manufacturing Quick Detach (QD) socket ensuring secure and fast accessory attachment. Tailor your setup with the 9-position adjustable stock providing optimal comfort and control. Elevate your accuracy with the adjustable height cheek comb giving you a customized fit for any scenario. Discover superior adaptability and precision with the ACX Stockengineered for excellence. Specifications for Black River Manufacturing ACX 4.5 Collapsible AK Stock: Manufacturer: Black River Manufacturing Stock/Brace Material: Aluminum Package Contents: Black River Manufacturing ACX 4.5 Collapsible AK Stock QD sling swivel Black River Manufacturing BRACXSAK45CF: ACX 4.5 Collapsible AK Stock Carbon Fiber