King Arms just announced that they have GP-30 Grenade Launcher (KA-CART-05) back in stock for interested wholesale and retail stores. This is made of aluminium and nylon fibre... "This grenade launcher is designed for AK series AEG. The body is full metal constructed and the hand grip is made of Nylon Fiber. The mounting system helps the launcher to be installed and detached easily. Suitable for most 40mm cartridges such as King Arms M381 HE VN and M433 HEDP cartridge. It can be used to store battery as user's preference."