Rolls Royce of Uppers & Lowers ???

[kuduman]

I'm building a hog rifle, 6.5 Grendel, as per recommendations from my last post, Proof Research carbon fiber barrel, Aero Precision BCG. Question, removing $$$ concerns, is there , above all others, a mil spec upper/lower that would be your first choice ?? Many thanks to all the gentlemen who took the time to answer my last post, very kind and appreciated, and many thanks for the upcoming opinions.

 

[Kansaswoodguy]

I've got a couple of Mega SBU uppers that would be fantastic for a precision build. Very thick walled uppers and minimum spec diameter on area that accepts barrel extension for a tight fit.

 

[MudRunner2005]

Rainier Arms receivers are nice. Have a couple myself.

 

[B23]

I have a couple Seekins rifles, an AR15 & AR10, and they seem to be a pretty high quality piece.

 

[Recon$$]

JP enterprises

 

[just country]

morning, I have 2 rock river AR's. I shoot the
55gr. new technologies bullet. both shoot .500 or
under if I do my job. never had a problem with
these AR's. add on JP makes good stuff.
justme gbot tum

 

[JuddL]

A lot of good ones already mentioned...I'll throw Aero in the mix. The forged M4 is a pretty good setup.

 

[Deleted member 48126]

I have a rock river arms .300 BO thats pretty sweet.