The Lancer Tactical Grenade Gas Charger is a great way to charge your green gas airsoft pistol magazines on the field. Transfers gas from big bulky cans into a small and compact grenade. Fits in standard grenade pouches.Simply fill the grenade with green gas, like you would a gas gun magazine, with a little extra time. Then, bring with you on the battlefield, and load your green gas pistol magazines with this little handy grenade instead of that giant can of green gas!All metal construction for durability. Not to be thrown or explode, as this is merely a gas charger. A clever and handy accessory that we recommend!