TRIROCK See Through High Profile Compact Tall Tactical Riser Base Mount with 3 Slots Picatinny Weaver Rail Fits 21mm

Solid Aluminum Construction wIth Matte Black Finish, that ensure the lightweight and hard durability. This riser mount offers the tall Saddle Height to mount the red dot sight, flashlight, riflescope or other accessories on the 3 slots 21mm picatinnyy/Weaver top rail. It features see-through design that gives better wide open view. Quick and Easy Installation & Removal. The turn knob could be adjustable with proper tension to mount the base on a 21mm standard rail. It integrates the 21mm top rail with 21mm base mount as a tall Riser perfectly, that could be used for rising your red dots to get a clearer view over front sights.