Still into the new items at Landwarrior Airsoft, you might consider looking into this Gas Grenade which is cheap enough for you to use for your rarely used grenade launchers (not just for photo ops. Though you might want to change the O-ring first before using it as reports from the field indicate some leakage... "Holds around 50 bb's. These are identical to the rest of the moscarts out there just much cheaper. We tested them with Abbey Ultra gas which provided very amusing results. With these being Chinese gas products they come with a 30 day warranty."