The super V has been much-discussed here and elsewhere - the recoil-redirecting properties are more useful (much more) in a full-auto version than in the civilian semi-auto version - but nevertheless useful in semi-auto, too, particularly in rapid-fire. It's a nice bullet hose allowing you to stay on target like a ganster's typewriter (thompson), but still comes in much lighter.
They REALLY missed the boat though, in not making that thing a bullpup. You take that ingenious recoil-reducing design, put it in a bullpup carbine, 16", where the OAL is *just* enough to be legal without a special license (26"), and you'd really have something for civilian sales. It'd probably be better looking as a bullpup too. Clearly, it could be made into a bullpup easily with just a trigger extension mechanism straddling the guts, since there is no buffer tube or any other goings-on rear of the main receiver module - just wasted space with that ugly stock. To make matters worse, the design is such that you have to be high as a kite to see over the receiver, buffer tube or no buffer tube, and yet it's NOT a bullpup! You're as high as a bullpup unnecessarily without getting the benefit of a bullpup. And .45 acp, being a low-pressure round, is a great choice for a bullpup, by minimizing Kb concerns.