US Patent 8397422 Gun sight adjustment device

A device for adjusting a gun sight disposed in a dovetail groove on a gun slide is presented. The device includes a pushing member and a pressure plate both moveable in a first direction and an opposing second direction. The device further comprises a bracing member opposing the pressure plate, where the bracing member is stationary, and a seating member disposed between the pressure plate and bracing member, where the seating member opposes the pushing member, and where the seating member is movable in a third direction and an opposing fourth direction. When the gun slide is secured between the bracing member and the pressure plate, moving the pushing member adjusts the position of the gun sight.