Yes, I keep looking at this too, if I hadn't just bought that Sig rifle I would be all over this especially since I could just run over and pick it up.
Slseals if you have the coin and close by its a no brainer people are asking 1100 for a posi port when these stage fours are just as good it will get you over 500/500 with the right setup mine with a 293upper and 6pnd lower got me 518/ 556 tq so well worth the investment