JE Machine Tech AR Ammunition Shell Catcher Black. Features/Specifications: Minimal real estate on the gun small attachment points Captures and holds approximately 30 rounds Zipper at the bottom of the mesh bag for quick easy emptying Absolutely no interference with the gun's cycling Features of JE Machine Tech AR Ammunition Shell Catcher: Minimal real estate on the gun small attachment points Captures and holds approximately 30 rounds Zipper at the bottom of the mesh bag for quick easy emptying Absolutely no interference with the gun's cycling Package Contents: JE Machine Tech AR Ammunition Shell Catcher JE Machine Tech TS-SC2B: AR Ammunition Shell Catcher Black