Here's a link [url]http://home.bak.rr.com/varmintcong/jpar.html[/url] to my JP Enterprises Grade 1 rifle.
I built up the lower using a DPMS stainless steel stripped lower and then had a Grade 1 JP upper delivered to my door.
The gun shoots very well, usually most any factory load will go 3/4MOA or less for 5 shots. My most basic handloads usually perform 1/2MOA for 5 shots, when I push for 10 shots typically they will shoot 3/4MOA for 10 shots.
JP Enterprises is pretty nice, at the time I was shopping for uppers I was trying to decide between either a JP Enterprises upper or a DPMS upper. I'm happy with my JP upper that I bought.
If today I was shopping for another long barreled upper the two companies I'd probably be hard pressed to choose between would probably be MetalCraft Specialties and JP Enterprises. MetalCraft doesn't do quite so much flashy stuff with their rifles/uppers but they use a downright KICKBUTT Krieger barrel for their uppers. I've also heard some pretty glowing reports from very satisfied owners of metalcraft AR15s.
MetalCraft Specialties [url]http://www.metalcraft-ar15.com/[/url]