Some models are already shared between AR and BR thus work with both animations, so I don't see why the rest ot them cannot be shared. Also, as a AR wielder I am looking at that AK looking beamer with great jealousy. Need that one! Asked for the Resistance Rifle back in September so my hopes are small though.
The Resistance rifle is the best looking rifle in the game but it can only be found in the Beam Rifle power set. Could it possibly be copied over to the Assault rifle set? It would fit the set perfectly with the somewhat realistic rifle look and the tank below for the flamethrower.