i've been working on this for quite a long time.
still, it jams sometimes and you fix that following these steps-
-first, select the middle body.(it's been grouped for your convenience)
-move it to the backround.
-finally, fix it. it shouldnt be too hard.
to shoot press right or pull the trigger. do not do not do not! do not hold it!
to reload, when it has one bullet left, pull the platform that pushes the bullets in down, and above the gun should be a bullet. clone that into the handle!

:):):) have fun