Algodoo

Loaded with 00 Buckshot, this gun is ready to rumble. Oh... there are also slugs...

Jokes aside, this is definitely my best shotgun I've made yet. This is striker-fired and has a very smooth pump and good ejection. Features an AR-15 buffer tube and a picatinny rail, allowing any AR-15 stocks to fit on, as well as any rail attachments you have. Another cool feature about this gun is that it features slam-fire which may not be practical, but it's cool in my opinion. Pretty reliable, but there are some hiccups here and there. Has quite some power behind it too, can do quite some damage to things.

-----CONTROLS-----
Enter - Fire
Left/Right Arrows - Pump
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-----KNOWN-ISSUES-----
* When pumping, sometimes shell doesn't sit all the way in the loading ramp, causing pump to get stuck. Solution is to just undo and pump again.
* Sometimes shell doesn't get out of internal magazine. Just pump again.
* Sometimes the piece that stops the shell breaks entirely. Only solution is to undo or restart the scene.
* Shell doesn't eject sometimes. Just grab shell from breech and throw it out.
* When pumping, sometimes the piece that stops the next shell from going doesn't catch it in time, leading to the second round trying to go. This causes the feeding ramp to get forced down and the only solution is to undo.
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I hope to find solutions to these problems, especially for the first issue. If anybody wants to help with it, I'd appreciate it. Also, provide purely mechanical solutions and not use workarounds like using gravity to help hold the piece.