Basically, it becomes its own gun at that point then.The removeable backend could also have a mount for a stock like Recon and Raider, and because it uses the modular system to attach to the launcher, it could be attached to the Longshot's barrel/pistol.
The bandolier is kinda cool. I am pretty sure it's designed to double as a strap for something like the Recon which has a clip point on the stock (most of the rifles have a clip point on the grip as well).
That other gun isn't so small, the Deploy looks pretty big even when the grip is needlessly folded away. I dunno about that one, the gimmick seems pointless, the flashlight is gigantic and has a clip sticking out, the gun has a clip sticking WAY out the side - not like the Raider, but crazily so. Still, it looks like it could have some charm, it has shotgun-style pump action.