The .223 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 .223 Digital Boresight cap converts the .223 for AR-15 SureStrike™ into a digitally controlled boresight. When assembled, the laser is activated by trigger pull, featuring convenient and efficient battery use. Pull the trigger, and a constant-on laser will illuminate. Turn the laser off by pulling the trigger again.The .223 Digital Boresight action cap can only be used to replace the cap on the .223 SureStrike™ for the AR-15.