seconding Palmetto State, just don't be in a hurry. I got mine pretty quick but some people are reporting long waits.
Very pleased with it so far. 16" CHF 1:7 with YHM Diamond rail. $450
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Note almost all their junk shows it being out of stock, just check it daily for a week and sooner or later one will pop up "on sale" that meets your needs in your price range.
Well, what brand is the lower?
Different brands may have different finishes/cosmetic appearance, and some people like their upper and lower to match as closely as possible.