A gas powered grenade shell for M203 launchers and CAW M79. This special version denoted HP for High Power is CO2 capable, with a lightened activation valve for easy launch. All metal construction with attractive anodized finish. Fires 204 No. 6mm BB's at one time. A stronger valve system means no more stuck valves like on the Mosquito Mold versions. High powered design allows use of CO2 and red gas for over 80-100 feet of effective coverage.