She weighs 150kg and fires $200 custom-tooled cartridges at 10,000 rounds per minute.

It seems like the fore-most barrel isn't larger than the top or bottom, despite being closer.

No light saber attachment?

I noticed that barrel thing at the end and I was like FUUUUUUUU- *rageface*

Ah, disappointing about the barrel, Good attempt none the less. Working on a perspective is hard as fuck.

From what it looks like, a slight change in the line where the arrow is would fix it.

I like it :) it does have that perspective problem in this drawing. But it could make for some particularly cool poses or some particularly unsettling destruction. - Or both.

"No light saver attachment?" Lightsabers/blades make everything better :) even Old Painless (Or Sasha if you prefer). But yeah it looks like it would have the ability to fire some kind of energy weapon in addition to regular ammo? Because that's really the reason you don't see minigun troopers today, not that the cartridges would be too expensive or even that they're too heavy (I'm sure the military would have it's best minds think up a way around that. Can you imagine how useful such a weapon would be for "shock and awe" tactics?) but that the ammunition takes up too much space to be practically carried around over long distances. (Except in Helicopters of course.) So some sort of battery attachment would be the idle solution in a SF setting where it wouldn't need to run on atomic power.

*ideal solution

Aaaas well as probably some other corrections.

You used a ruler and a circle sheet, didn't ya?

Apart from the barrel and disc minor errors, it's a good technical drawing. You broke down the object into simpler geometrical figures and worked from there, it really shows in the mini-turbine there.

Just a ruler, the ellipses are all freehanded. :3

I think you might've reduced the foremost ellipse a little too much. Looks kinda weird.

Now that you mention it, it does. I should do studies on how to accurately calculate depth along an oblique perspective line on a 2-point perspective space, ideally create a perfect cube in the process. I just need to find a good method to do it.