Bushnell 74-0100 Instruction Manual page 5

On/Off Switch
A
Screw
B
Laser Diode
To select the proper adaptor, find the largest-diameter adaptor that will fit in the
muzzle of your firearm. Then, screw the adaptor into the small end of the laser
emitter using the small screw in the center of the adaptor. As you tighten the
screw, the diameter of the adaptor will expand. Once it has expanded to match
the diameter of your firearm, push the adaptor and small end of the laser emitter
3