Gus's Garands is your best bet but he usually has a 6 month lead time. If you are mechanically inclined, I encourage you to buy the tools and do it yourself, it isn't too terribly complicated. I'd he happy to walk you through the process if you choose to DIY
Everyone takes a beating sometimes.
"Just rubberize that carp"
Much like anonymous sex, internet based gun transactions are mildly risky, but almost always worth it.