I have 20 we tech gas blowback rifle mags that are all in great condition some are pretty much new! Some are P mags. One stanag is missing a feed lip/ gasket that one is 20$. All of them have zero leaks and some of them that used to have leaks I bought brand new valves for. I disassemble and clean/ lube them often as well. 30$ per mag, if you buy multiple we can negotiate a lower price. All of them lock my bolt back and zero issues that I know of, all great mags! I always keep green gas in them to keep pressure and lubrication on the seals so they will ship with a little bit of green gas in them unless you want otherwise. PayPal ready! Update : 3 mags left 3 stanag (one missing lip) Message me with any questions or offers!