Unbelievable customer support from Sig. I had an issue with my MPX, I called Sig they said no problem. He sent me an email with return label. They received the gun yesterday and sent out a new one today. I could not believe I got an email from them this morning saying my gun has been shipped. I have never seen customer support like this before and I have been shooting airguns for awhile. As long as your gun is still under warranty which it was and you make sure to register it with them as soon as you get it, you are good to go. This is the second MPX I sent back with the same issue, it stops firing after a couple thousand rounds. You can pull the trigger but no c02 comes out. I found out from another poster that they have a weak trigger/ valve assembly that wears out over time.