A universal, quick-mount gunsight mount that does not require any bolts. The mount fits any pistol that has Picatinny Rail or that has any longitudinal groove on the lower muzzle. The mount includes a single piece that slips around the muzzle with two jaws that mate at the top when a sight is clamped on. A protrusion on each side of the mount mates into the slot formed by the Picatinny Rail on the gun, while a detent forces a member into a slot on the bottom of the muzzle. The mount becomes locked to the muzzle and will not move when the gun is fired. The bottom of the mount includes an optional rail that can be used for a laser or light. The mechanical sights supplied with the gun are not blocked and can be used when desired.