DESTINY 2 COLDHEART EXOTIC TRACE RIFLE

This is a big one, designed to be printed on a large bed printer 300x300. There are cut outs for LED lighting and a microswitch in the trigger. Magnets holes in certain parts, such as the bullets, top loader and magazine (On some you'll need to pause the print to fit the magnets). The magazine has holes for pogo pins and room for a small 2s battery battery which will be suitable for blue LEDS. A 5mm diameter spring can be fitted to the bolt mechanism  a couple of compression springs for the trigger. I would suggest using some 5mm rod for the pull lever on the bolt for added strength.

I used some clear flexible hose from a garden store for the pipes, you'll need to source the appropriate size based on what's available in your region.