First AR custom build

For the price nothing out shoots a white oak upper. Reasonable Barrel length lengths differences do NOTHING for accuracy. 7 twist barrels optimize heavy bullets, I've never had good luck with heavy bullets traveling slowly cleanly killing coyotes.

I shoot a 7 twist but shoot 55gr bullets very fast. (brass doesn't last long) but I wouldn't mind shooting a 10 or even 12 twist. With the bullets I use.
 
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