The B5 Systems Collapsible Precision Stock is designed for Mil-Spec applications. It features many excellent qualities found in only the most top tier stocks such as internal tensioners optimized for Carbine or AR-15 Receiver Extensions. It also includes two adjustable fixed sling mounts and an M-Lok attachment system for additional accessories. The B5 Systems Collapsible Precision Stock is a perfect option for any shooter looking for an enhanced feature set for their AR-15. FeaturesLimited rotation, steel, ambidextrous Quick Disconnect sling mountTwo ambidextrous fixed sling mountsNose shortened allowing for single-point sling use while stock is collapsedAdjustable buttpad and cheekpieceQuick thread precise adjustment