B5 Systems AK Stock Fixed Black. It features improved ergonomics an adjustable length of pull QD/fixed sling mounts and a cushioned buttpad. Proudly made of composite materials and steel hardware. Specifications for B5 Systems Fixed AK Stock: Manufacturer: B5 Systems Gun Make: Kalashnikov Gun Model: AK-47 Stock/Brace Material: Steel Finish: Matte Weight: 10.5 oz Length: 9.5 in Features of B5 Systems Fixed AK Stock: 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. Package Contents: B5 Systems Fixed AK Stock What firearm models does the manufacturer say B5 Systems Fixed AK Stock is compatible with? The manufacturer suggests that B5 Systems Fixed AK Stock is compatible with AK-47B5 Systems Ak Stock Fixed Black