The LT-223 fits inside the cartridge chamber and features a firing-pin activated switch that indicates bullet impact with a bright red laser dot. A built-in snap cap protects the firing pin and O-rings hold the laser accurately in place allowing for repeated dry fire practice without compromising accuracy. The rim-less cartridge trainer also allows for constant racking without unintentional ejection. The LT-223 Training Cartridge is LaserLyte Trainer Target compatible. The LaserLyte LT-223 is the foundation training cartridge for an array of new Training Cartridge Sleeves for many popular hunting calibers. The LaserLyte Training Cartridges in the new rifle calibers give young and first-time shooters the opportunity to practice the fundamentals, as well as, refine trigger control skills for shooters of all levels. The rimmed sleeves are made of solid brass and work perfectly in all bolt-action rifles. The LT-223, in combination with any of the new Training Cartridge Sleeves and the LaserLyte Trainer Target, can improve the success of any hunt or target shoot with realistic, anytime-anyplace, affordable training.