ICS MA-158 40mm Airsoft Plastic Gas Grenade single piece Manufacturer: ICS Capacity: 60 rds 350 FPS, Fits Most M4 / M16 Lower Rails Propulsion: Green/Red Gas/Propane Package Includes: One (1) 40mm ICS Grenade Shells (ICS MA-158) Reuseable ICS Grenade Shell Included