WE Custom M&P 9 Slide issues
 

So I just bought a new WE Custom M&P 9. I like it, it's ergonomic and pretty. The problem is that i can shoot maybe 6-9 rounds off, and then it just blows all the gas out. It racks normally when you pull the mag out, but the mag in, or has issues. Does anybody know what this could be, or how to fix it? Attached picture to better explain.

Why u no Mariu?!

Try new mag, check piston and nozzle.

The Marui wasn't as pretty. >_< My friend and I pulled it apart a bit (I don't know what I'm doing so I let him do it) and we greased it up. It feels like it's sticking though, even still. New mag didn't help at all. Same issues.

I bet the marui looks a lot prettier now that you know it works better lol
Check the air nozzle for cracks

If it's brand new contact the retailer, they should be able to help you out.

I have one from them as well, awesome pistol. :)