I wonder if they still have the bushing/guide rod issues? Once you replace them with an upgraded set they're usually flawless. I had the regular gsg version several years ago and it was a hoot, enjoy!
You should be good to go then, that was the only issue I ever had with mine. I probably should have kept mine but I needed a pistol Indiucky had for an old military shoot so it flew the coup. Wasn't ammo picky either IIRC.1. The previous owner bought the kit that had the bushing/guide and a certain screw that solved issues.2. I have the little labeled bags the parts came in and there are even a couple bags with things in them that I'll have to ask about what they are for, here on the forum.
You should be good to go then, that was the only issue I ever had with mine. I probably should have kept mine but I needed a pistol Indiucky had for an old military shoot so it flew the coup. Wasn't ammo picky either IIRC.