Picked up a used TM 4.3 Hi-Capa recently, was very happy with it, but it started to have a little problem. When firing, it sometimes doesn't return to battery, needing a little push. Something to do with the loading nozzle it seems. It has a stock slide and outer barrel, but I think the recoil spring was upgraded.
When field stripped, the loading nozzle moves very very smoothly, and snaps back perfectly, no friction at all. There is a slight point that it can catch on if you push it to the side a bit, looks like it's part of the slide design though.
Any tips?
Thanks,
Alex