Poseidon 50 Round Magazine for Glock AAP01 WE Galaxy EMG BLU Orion Gas Blowback Airsoft Pistols (Color: Black)

"I am generally not happy with this product when its new. When I first gassed it up it would hold for maybe 5 sec then the output valve would open and the gas would release. I then took the output valve and greased the orings up, the mag then held gas for 30min to a hour then randomly expel gas. I happen to have a upgraded output valve laying around an tried that, all problems were gone and put the mag in my orion and worked perfectly. So when purchasing this product you will most likely need to also be looking for output valves.