SBR LaserMatch™ cartridges are specially designed for handgun and sub-machinegun training applications. They provide the shooter with immediate feedback through trajectory visualization - you actually see the rounds impact the target - thereby allowing rapid correction of shooting errors. (ERVT) Extended Range Visible Tracer: Visual ballistic signature exceeding 150 yards. Use in longer range handgun and machinegun training applications. Excellent for firing demonstrations and for testing firing ranges to determine ricochet vulnerabilities.