I'm short, stiff, and on the heavy side. For me the AR pistol is a pleasure to shoot. I shoot the pistols off hand as well as any rifle off hand. My cheek takes a weld on the buffer tube just fine and I am able to tuck both my arms into my body for support. The top gun has a carbine gas and sight system and shoots as accurate as most carbines I have shot. The bottom gun is what it is, out to 50 yards if the dot is there so is the bullet. To me both of these guns are 50 yards or less guns performance wise anyway. 11 1/2" and 7 1/2" barrels.