The 9mm Digital Boresight action cap, acts like a snap-cap to protect your firing pin. The replacement action cap is a microprocessor controlled primer, which controls the pulse of the laser.
The Digital Boresight (DB) action cap converts the SureStrike™ into a digitally controlled user-friendly boresight tool. Once the laser cartridge is assembled with this back cap, the boresight is activated by trigger pull. The digital boresight back cap features convenient and efficient battery use. Once the laser cartridge is assembled in your firearm, pull the trigger to dry fire and you get a constant-on laser. Turn the laser off by dry firing (pulling the trigger) again. The Digital Boresight (DB) action cap can be used to replace the cap on all SureStrike™ 9mm laser cartridges and can be used with all available caliber adapters.