You could always use an invisible AHuman that's used to shoot the gun. Then you could sharpaim and everything with it. But it might be tricky to get right.

Okay, I pretty much did a Lua overhaul on this. There are now two modes you can switch between by tapping the Pie Menu button: fixed and movable.

In movable mode, whenever you aim (sharp stance), the floating gun will move slightly forward and up a little bit. This puts it slightly more directly over your held gun, so the floating gun's shots will line up more accurately. Also if you aim up at a high angle, the floating gun will move behind you so it doesn't get in the way of your shots. When you line a target up in your sights, the gun will move up a bit and track the target directly, instead of a position near the target.

Here's a small demonstration of it:


Phew. This is the most complex Lua mod I've done so far. I don't think I can even understand my own code at this point, since I keep building onto it .

Nice idea there man, it looks great!
Keep going, don't let adversity kick you in the motivation!

It...
It is exquisite...
And promises a plethora of uses...
...
I actually aplauded once the gif finished loading.
You inspired applause over the internet.

A few people have probably managed that, but certainly not through modding a game *cough* <_<

A few people have probably managed to post properly here, but certainly not this one.