Their kit are (from my experience), very nice. J&T will not screw you. You get what you pay for... and then some!!!!
Just thought I'd plug this company one more time. I've been very happy about the service, quality and attention to detail of this company.
Anyway....... It's a "mil-spec" m-16. Except of course that it's semi auto and/or post ban etc...
I'm thinking my next big purchace will be a kit without barrel so I can go with 300 whisper.
Thanks for the question and the input.