Algodoo

This shotgun works well Except for one minor issue and one major issue.
The minor issue is, the drag tool did not have enough force to move the fire selector handle, and so I had to increase the force. After doing that it moved just fine.
The major issue is, after the last shell is fired, a spring falls out of the mechanism. I don't know if it's the recoil spring or the magazine spring. It happened 2 out of 3 times when I shot all shells in the magazine.

Other than those issues, the action is smooth and the buck shot has a lot of knock-down power!

I'll check those issues. for the MINOR issue, just zoom out a bit (or increase the drag strength. I use the first)

I didn't find any issue with springs. Fired 5 complete mags without anything. Try re-downloading?

I downloaded the scene again, and now I'm having even worse issues. I can't get more than 2 rounds fired in semi-auto mode and the gun jams. I restarted the scene and tried full auto, and the same thing happens. It jams after 2 or 3 rounds. I've been using the Enter key to fire the gun if that makes any difference. Sorry, friend. I wish I had better news to give you, but that's what's been happening.

I'll give it some precision work to make it less likely to jam
EDIT: Improved

FLAWLESS! Works perfectly now. Good job!