Check this.

http://sodankerjuu.deviantart.com/art/Ammo-shelf-79610602

Ammo-self ,wich was ment to be used in wl2042 beta 2... now redone and textured by friend of mine. ALSO completely free model to use.

and this..

http://sodankerjuu.deviantart.com/art/Bazooka-79943156

One of the many bazooka concepts ,wich wouldnt never been in any version. But now redone again a friend of mine and completely free to use. it should easily fit to player model hands ,since it has still the same animations like there was in BF42

enjoy, if you are still working on this.