It seems that randomly when I will pick up a weapon that it will completely dissapear. The hands are still in the same position and visible as if they are holding the gun but poof! nothing there. Sometime when this happens I can zoom im and fire normally, just without the scope appearing.

Also I recently had a bug when picking up an enemy DSG-1 (the sniper) When I tried to zoom in it positions the gun in the same manner as the holographic scope(middle of the screen and slightly zoomed in) but it refused to actually zoom in and show the sniper reticule. (im sorry if this part is a litttle hard to follow... im having trouble thinking on how to explain this properly)

And last but not least, just a funny glitch (might be related). After Killing an enemy that was cloaked I looked to the ground to pick up their SCAR and it seemed to have the blue outline as if it was cloaked. When i picked up said rifle it was not visible until I switched active weapons a couple of times (pressing Y)

Any thoughts on this issue?

I experienced the same problem once with the gun dissapearing. But i also ran into a couple times when i was not able to fire my gun in the multiplayer after i had reloaded. kinda weird. But other than those issues i am loving this game.