K'nex Pump Action Shotgun Model

Hello there.
New gun, a model again, though not based on any real gun. Just something I made to try a pump action mech for in model guns. You pull the pump, and on the side, the ejection port (I think) goes back with it. But if you pull the charging handle, the ejection port goes back, but the pump doesn't. The ejection port part sticks out on the back a bit, when pulled back. I don't really know why I made it like that, but I saw that the M1897 (trenchgun) does it, so I made it this way.
It is a pretty comfortable gun, sturdy, looks pretty decent, though not the best
Stats:
- Pump action
- Moving trigger
- Comfortable
- Sturdy
- Strange-ish stock

I hope you like it, and tell me what you think

Video: