Brand new in box, ships next day. Novritsch Hpa mp5 mag adapter for glock GBB. Convert your AAP-01 or other Glock GBB pistols into an HPA-powered airsoft gun and use straight AEG MP5 mid-caps for higher capacity. Recommended with 0,20g – 0,28g BBs and 100-120 psi air pressure. Do not use it with higher pressures or curved MP5 mags! This first generation adapter cannot be used with our new curved 130 round Mp5 magazine. However most MP5 magazines in the market do fit this gen1 adapter. There is small differences between mp5 magazines on the market which is why we cannot give any guarantee of flawless feeding for Mp5 magazine of other brands. Features: No cooldowns Ambidextrous BB latching system to prevent dropping BBs after removing the magazine. It can be released by pressing the latch. Material: Fiber-reinforced nylon (adapter) and zinc alloy (magazine)