Reprofiling AR lower?

I've been thinking about doing it myself, just haven't found a lower to try it yet. The hardest part would be to remove the reinforcing at the rear of the receiver, the rest would be pretty easy. Keeping my eyes open for a cheap stripped Norinco to practice on.....
 
If you understand how forging works you would know that even if shop was to mill that fence flat it will alway show like grains in wood s it's forged.
You would have to surface grind it then heavly bead blast it the paint ityou would be looking at prob 300$
 
I could maybe give it try in the new year. As mentioned, not sure how well one could blend out the machining marks. The entire lower would have to be refinished.
 
I understand it probably wouldn't end up being a flawless end product (especially with my skills). I also wasn't offering the service to anyone, just stating I'd like to try it.
 
I've changed a Dlask raw forging into an A1 lower. It took a machinist one week to program all the functions and that was with me supplying the models. It may take longer or shorter depending on the machinist and the machine. It was more of a make work/labour of love endeavor. An already machined receiver would go much quicker but you are talking about 100-110 an hour and a lot of massaging to contour the receiver and take out the marks left from the tooling. It is pretty close though and was a good first experiment.
 
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