A friend of mine is applying for the SWAT in the MEPD, so he ask me for help on improving his RT-97C Heavy Blaster, the one used by Sandtroopers in Star Wars, ANH.
So here's the first part, ASAP will start to work in the middle section.
For the Handle I've remixed and used some parts from the splendid job of Stormtrooperguy, you'll find his complete work here:
The Charging handle is designed to be functional, you just have to find a suitable spring, of course this piece is not 100% accurate to the MG15, and is just for visuals.
As always, enjoy your print!!