80% build help

atm1

Inactive
With raw aluminum pieces, what prep work do I need to do before anodization? I don't have access to a bead blaster. But one piece is bead blasted from factory.

Should I use a hand drill with easy jig gen 2? I have the stabilizers.

I purchased a cerro forge upper and lower. the lower looks like in the picture but the upper appears to have been bead blasted. it is a really dull color. It also doesn't mate correctly with the lower receiver. upon further inspection, one of the sides on the rear of the receiver is a little longer than the other side. Is this normal? Isn't the rear of the receiver supposed to be perfectly even and square?
 
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