[Xenomorph]

Is anything different about the new MPX-K PSB coming out? My Gen 2 runs Gen 1 mags fine. I have 6 Gen 1 mags I fully loaded with ammo and let set for about a month after I bought, and haven't had the first issue out of them.

 

[Xenomorph]

Yea, that being said it is hit or miss on Gen 2 running Gen 1 mags. From what all I had read on the internet.