AR15 M4 FLAT TOP COMPACT 1/2 INCH RISER MOUNT PICATINNY RAIL
One piece body designAttaches to flat top Picatinny rails to raise line of sight by 1/2"Locks firmly in place with two large thumb screwsInstalls in secondsMultiple ring slots (8) to adjust for proper sight positionMade of heavy duty quality aluminum alloy 6061Anodized matte black finishTakes standard PICATINNY OR Weaver ringsMount overall length: 3.5"(85mm)Weight: 3.4OZ