The LaserLyte 1226992 is a dual-purpose 9mm laser trainer and bore sight cartridge. It allows you to practice dry-fire shooting and zero in your iron sights or optics without leaving your home, saving money on live ammunition. Key Features: Dual Functionality: Features interchangeable caps for constant-on bore sighting and firing pin-activated training. Training & Compatibility: The trainer cap displays a red laser dot on impact and works with LaserLyte interactive targets. Fit & Power: Designed for 9x19 chambers, utilizing included batteries for operation.