JGood Posted April 4, 2018 Report Share Posted April 4, 2018 I added the entire paragraph for context, but the part that confuses me is the last part. It says this well thought out upper receiver, is fully lapped. Im assuming that theyre talking about the barrel, but the wording refers to the receiver. I know you can lapp the rails on a semi auto pistol upper receiver, but can you lapp the upper receiver on a an AR-10? Starting with a 7075 T-6 billet aluminum M5E1 (.308) stripped upper receiver from Aero Precision and our premium 16" .308 WIN Lightning Series barrel this well thought-out upper receiver features a matched Aero Precision super light-weight 12" Keymod free-float handguard and is fully lapped for accuracy. Quote Link to comment Share on other sites More sharing options...
blue109 Posted April 4, 2018 Report Share Posted April 4, 2018 You can lap the face of the receiver where it contacts the barrel. Quote Link to comment Share on other sites More sharing options...
JGood Posted April 4, 2018 Author Report Share Posted April 4, 2018 Ok, I had never heard of that. Thanks. Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted April 4, 2018 Report Share Posted April 4, 2018 (edited) 3 hours ago, JGood said: Ok, I had never heard of that. Thanks. http://pacifictoolandgauge.com/ar-tools/10318-ar-15-upper-receiver-lapping-tool.html A very well made tool! They have them for both platforms. Edited April 4, 2018 by jtallen83 clarity Quote Link to comment Share on other sites More sharing options...
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