The NcStar Tactical Rifle Scabbard is designed for shoulder carry or modular mounting. Webbing on both side with four detachable PALS straps for ambidextrous usage. Six D-ring locations for attaching the padded shoulder sling to for multiple carry options or preferences. Removable retention strap with quick-release buckle. Padding around the whole scabbard to protect your Rifle. Grommet for drainage. Expandable to three positions for various barrel lengths. Adjustable zippered opening for hi-cap magazines Plenty of space for weapon mounted optics.