Features: Fits Benelli M4 and Clone Shotguns Allows mounting of Aimpoint T1, T2, H1, H2 and clones Lower 1/3 co-witness, which allows use of standard iron sights through red dot Provides a super clean OEM look Weight 1.4 oz Constructed from 6061 aluminum, hard coat anodized for a lifetime of service Includes optic mounting screws REUSES factory M4 rail screws, or 2x Benelli screw part number 143990A and 2x Washer 1439610A 100% Mode in U.S.A. with a lifetime warranty