I am certain it is a stainless Sig barrel. I don't think it was polished, but can't be sure. When I cleaned it up over the weekend I noticed the feed ramp is very bright as well, so it might have been.
Thanks for the compliment.
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Up for grabs is an excellent condition Sig P220r.
Lots of upgrades, SRT trigger, Night sites, E2 grips, Stainless Sig Sauer barrel, and stainless guide rod. Comes with all the goodies you expect, original Sig box, docs, lock, plus the E2 install tool.
Price dropped to $650.
Paid more for it...