With the Laser Ammo SureStrike Dry Fire Training System 12 Gauge Shotgun Adapter, a SureStrike laser bullet in 9mm caliber is fitted into the detachable capsule foreend, which is screwed shut with the end cap. The capsule is then inserted into the chamber of a shotgun. This feature was designed specifically for police officers, who can use the same laser bullet to train with both their service pistol and shotgun.