With the Laser Tester / Laser Cartridge (collimator), you can check your weapon at any time and practice your shooting skills, even in daylight.
Adjustment and control in one. The laser tester is inserted into the weapon just like a cartridge. It then projects a red dot at the desired distance (e.g. 50 m).
If this point deviates significantly from the reticle, the weapon needs to be re-zeroed.

Includes matching batteries.