The RFB Riser is made out of hard coat anodized 6061-T6 aluminum similar to the RFB Quad Rail. - This Riser can be used with the RFB Quad Rail kit to match the height of the Top Picatinny Rail for increased sight radius when using iron sights or can be used to add height on a purchased scope. - This kit includes one (1) RFB-750-Riser one (1) 10-32 screw and one (1) hex key.