This pouch is compatible with all standard fixed buttstocks, most rifle magazines and most collapsible stock designs. The adjustable lid accommodates 20-round or 30-round magazines. Features and Specifications: Constructed of lightweight 500 denier KodraA(R) ripstop Compatible with all standard fixed buttstocks, most rifle magazines and most collapsible stock designs Adjustable lid accommodates 20-round or 30-round magazines Elastic forward-slip protection strap on back Adjustable straps for secure hold Dimensions: 3in L x 4.125in W x 1in D Weight: 3.3 oz.