Now available at eHobby Asia, this 3-piece airsoft 40mm gas grenade shell from G&P can be fit into most of the airsoft launchers available in the market today including  STAR, CA, Mosquito Mold, Sun Project, G&P M203 Launchers,  & the Craft Apple Works (CAW) M79. It has a 1 shot rubber bullet head if you don't have BBs to pour into these.

Each gas shell grenade has a full metal body with rubber head construction and costs US$81.00 for the 3-piece pack.