i have some comments, and questions..first. do the barrels being sold have the extractor cut, and the sight key cut? do they have the rear cut for the sight alingnment key, and if so what side? 11:00 or 2:00?
i have a new A3 barrel sitting here ready to go on a customers rifle, looks pretty nice and has the extactor and sight key cuts. dont know if he got it from CMPicon or else were, didnt ask.
looks ok,.but doubt it will shoot better then a GI Remington or SC barrel, iv had them shoot inside a dime, cant get much better then that with old iron sights.
question..
why whould you need to true the receiver face on an A3 unless its a recovered DP receiver, the replacement barrel should index right up, if your smith cant figure it out, find another smith.
this aint rocket science, chuck it up, line up the pretty little lines, and she,s done.
if its a new GI barrel , it will have to finish reamed, 15 min, job tops.
turning the receiver face, setting back the shoulder is nothing more then BS,a and a waist of your money.
if you have a barrel that over indexes., try another barrel..dont shim it, dont over build the wheel..keep it simple..if it aint broke. dont fix it!!