Supernova Tracer 45 Auto 225 grain Full Metal Jacket Brass Cased Pistol Ammo Green Tracer 20 Rounds 1103118. By emitting a bright colored beam visible over 100 yards (and reportedly up to 300+ yards) this tracer ammo allows shooters to track the trajectory flight path and impact point of each round making it an exceptional training tool for both novice and seasoned shooters. Assembled with a brass casing and boxer primer this ammunition delivers reliability with every shot. Specifications for Supernova Tracer Pistol Ammunition: Manufacturer: Supernova Color: Green Features of Supernova Tracer Pistol Ammunition: Green Tracer 20 round box Approx 1070 FPS 45 ACP 255 grain projectile Green tracer 100+ yards of trace emitted 20 rounds/box Package Contents: Supernova Tracer Pistol Ammunition