I've wondered for a long time, and haven't been able to find the answer, so I just have to ask - WHY does the P90-looking base SMG have that impractical and horrendously ugly bottom bar? It even features in the mod thumbnail like some sort of in-joke! I never use the base SMG just because I despise the look of it.

Originally, I thought it might be a limitation of the engine, but then no other gun seems to be rectangular like that.