Laser Ammo Action Back Cap DB Digital Bore Sight. The Laser Ammo Back Caps Laser Trainers can be used to replace the cap on all SureStrike cartridges and can be used with all available caliber adapters creating a variety of specialized results to give you the feedback you need. All replacement action caps have a microprocessor controlled primer activating the SureStrike laser cartridge. By using exchangeable action caps you can decide which functionality is most suitable for your training. This feature makes Laser Ammo Replacement SureStrike Cap the most versatile dry fire training system available today. Specifications for Laser Ammo Action Cap - Replacement Back Caps for Dry Fire Practice: Manufacturer: Laser Ammo Included Accessories: Digital Bore Sight Quantity: 1 Color: Silver Package Contents: Laser Ammo Action Back Cap - DF Dry Fire 9 MM Digital Boresight Back cap Features/Specifications: a digital boresight replacement cap for the 9mm to help the shooter practice his transitions and much more. Included Accessories: 9mm replacement cap blue battery pack. 5K shoot guarantee come standard