Viridian R5-G26/27 Reactor 5 Green laser sight for Glock GEN 3, GEN 4 26/27/19/23/32/33/36/38/39 featuring ECR Includes Hybrid Belt Holster. It's the ultimate targeting system for your Glock! You get the all-conditions visible Viridian Green laser sighting system, Instant-On Enhanced Combat Readiness activation, and an ECR enabled hybrid holster. No fumbling with buttons in critical situations. When you draw, it's on. By Viridian.