ICS MA-158 40mm Airsoft Plastic Gas Grenades, fit most Grenade Launcher Set of 6 Manufacturer: ICS Capacity: 60 rds 350 FPS, Fits Most M4 / M16 Lower Rails Propulsion: Green/Red Gas/Propane Package Includes: Six (6) 40mm ICS Grenade Shells (ICS MA-158) Reuseable ICS Grenade Shell Included