Things that i see that need to be fixed (taken from the render posted on the 21st):
1) That awkward face in this render. (located in the right)

2) The thing you pull at reload (I seriously can't remember the name right now D: ) has too many polies (mainly the sphere). It can easily be replaced by a lower res sphere.

3) Side too flat and has a non planar vertex.

4) The triangle part is still not properly aligned (it might be my vision or the angle).

The rest I cannot tell from the angle. Keep working on it.