working 3 wide semi-auto brickshooter lego pistol tutorial

this pistol is a great desk ornament, and fidget toy, i can do many "sick reloads" and aside from it&piss poor range, it&got great accuracy (it&really not an outdoors shooter, but you can hit stuff around you) but i urge you to understand how this prototype works, and build a better one : ) .lxf file: (piece by piece recreation in Lego Digital Designer)