The NcStar Tactical Rifle Scabbard is designed for shoulder carry or modular mounting. With webbing on both sides with four detachable PALS straps, it was made for ambidextrous usage. There are six D-ring locations for attaching to the padded shoulder sling for multiple carrying options or preferences. It has removable retention strap with quick-release buckle, and is expandable to three positions for various barrel lengths. It also has padding around the whole scabbard to protect your rifle, a grommet for drainage, and an adjustable zippered opening for pistol grip or magazines. This scabbard is great for operators on the move!