It is one of their Tribrid guns, only with a non-compensated/ported version of the barrel. Normally the solid bit siticking out is full of holes.
SV basically makes custom competition guns to order. Not many models per se, you just tell them what you want, and after a long wait you get it. I have a friend who has 2 of them, they are pretty neat if you like that sort of thing. They are Price on Request, and the price is ALOT.... a cheap one is $2,000+ last I checked.