scope sight
sighting device for firearms, with either fixed or variable magnification.
Advanced Combat Optical Gunsight
American series of telescopic sights manufactured by Trijicon
sight magnifier
magnifying optic used together with another stand-alone sight to provide more maginification
PU scope
sniper scope of Soviet origin
low-power variable optic
variable-zoom telescopic sight with magnification range from 1x to no more than 10x
prism sight
type of sight constructed using prisms in addition to optical lenses