Another one fresh off the lathe.
This one is 8" long but the mount reflexes back over the barrel 2" (reflex area helps reduce back pressure so there is no gas in the face). 304ss mount, blast baffle and chamber; 316ss tube; the remaining baffles and end cap are 7075 (soon to be anodized)
Upper has a stainless 7.5" barrel. Shown next to a 10.5" upper for length comparison. It's roughly 1" longer than a 10.5" with A2 flash hider