Description:       Steel Construction with Matt-Black Finish One Piece Integral Picatinny Mounting Deck Fits All Flat Tops Precise MOA Windage and Elevation Adjustment uick release nut， Easy to hook up， easy to mount and dismount. Design to raise up the mount base level Carry Handle Top Allow installation of Aiming Devise without removing carry handle With adjustable Rear Sight，  the Rear Sight has Large and Small rear Aperture. 20mm Rail Net Weight: 258g             Package Content:   > 1 x Carry handle