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AR15.COM
3/7/2017 1:25:02 AM EDT
I just received my Stealth 2.0 upper. Should I lap the upper when I install the barrel or are the LaRue uppers already true?
3/7/2017 1:48:47 AM EDT
[#1]
Negative, Ghost Rider.

Insert barrel, thread on nut, apply torque, shoot.
3/7/2017 1:44:15 PM EDT
[#2]
...FWIW, I checked my Stealth stripped upper with a lapper....Turned it half a dozen times and looked....Perfect face with no gaps or appearance of out of square....

...I would say it's a waste of time unless you are trying to time a barrel nut...
3/7/2017 3:50:52 PM EDT
[#3]
Oh God no!

Just install your barrel and head to the range.
3/7/2017 8:05:10 PM EDT
[#4]
Perfect! Thank you!!!