See, that's kind of what I'm talking about. I'm not saying, in any way, shape or form, that that isn't a good deal. But, when it's +/- 3x what I can buy a regular AR for, it's really hard to bite. I'll probably end up getting a CZ Scorpion eventually, I just need to shoot one in person before I commit the money to it.
Have you checked PSA lately? Using their upper assembly & lower, I could build a 7.5" 9mm with QMS trigger and Shockwave Blade for under $600 + shipping + transfer.
The parts on his gun aren't 3x the price. The only things in that gun that are more than a 5.56 gun are the lower (only compared to cheap forged lowers) and the BCG (again, only compared to cheap BCGs).