My issue is not gun related but magazine, the gun works with other mags, but not the 4 new ones. The gun had one week of league on it after being cleaned, about 120 rounds her magazines were dirty, I was going to clean them and she told me to just get her 4 new ones, and this is when the issues started, with the loaded round not feeding into the chamber. she is using the same ammo as last week, out of the same box so I would rule it out also.