Maxim Defense Industries CQB Extended Cheek Weld Buttstock Only Black. 6 oz Additional Features: 0 Sling Points Condition: New Hand: Ambidextrous Country of Origin: USA Fabric/Material: 7075 Aluminum Features of Maxim Defense Industries CQB Extended Cheek Weld Buttstock Only Compatible with CQB Gen 6 and PDW Package Contents: Maxim Defense Industries CQB Extended Cheek Weld Buttstock Only What firearm models does the manufacturer say Maxim Defense Industries CQB Extended Cheek Weld Buttstock Only is compatible with? The manufacturer says that Maxim Defense Industries CQB Extended Cheek Weld Buttstock Only is compatible with AR-15Maxim Defense Industries MXM-47575: CQB Extended Cheek Weld Buttstock Only Black