I've been wanting to do an SBR on a MP5 style semi-auto. I was thinking about a vector arms gun unless someone has a better suggestion. My main question is...what should i start with, a pistol, or a rifle? I understand the rifle barrel is pinned and difficult to remove for modification and i also understand the pistol probably has something about the rear of the receiver that would make adding a stock an issue. I really like the three lug WITH the additional threaded barrel and thread protector, but i can't remember where i saw that.
What i want is a standard style that looks like this except without the navy grip:
What i want is a standard style that looks like this except without the navy grip: