Originally Posted by
DpdG
I really liked the original USW concept, as it theoretically provides 2 (shoulder stock, non-reciprocating sight) out of 3 of the major advantages of a carbine vs. a pistol, in a collapsed package marginally larger than a full sized service pistol. It's still limited by pistol caliber terminal effects, but 2/3 ain't bad.
Although I think the USW is a great platform for the P320 system, I am much less enthused about it retaining the pistol's slide-mounted sighting system. I prefer fixed red-dot for both ease of use and durability/reliability reasons. I'm also really confused about engraving NFA info on the USW portion, which is a non-serialized component, vs. engraving the serialized FCU.