I realize I may be a little late to the game on this one, but I'd be happy to provide some clarification to your earlier questions:
1. Criterion offers both a shiny stainless steel finish or a matte bead blast finish for a few more dollars.
2. Each and every Criterion pre-fit barrel is hand lapped.
3. Our contour information can be found by following this link:
http://www.criterionbarrels.com/savagecontours.pdf
Installation is a fairly simple process that should take about 15 minutes. Jim over at NSS is able to walk builders through the process over the phone (we'll likely be putting together a YouTube video shortly on the subject).
Please let me know if I can help answer any questions regarding the Criterion pre-fit barrel line in the future. I'd be more than happy to help out!
-Josh
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