The 300 win bolt shrouds were in and out of stock quickly at mile high earlier this week. I was on the email list to be notified when they came back in stock so I ordered one as soon as I saw my email message from mile high. I also got a mag at same time.
Unfortunately, I see that they are back out of stock again at mile high. I suggest putting your name on the email notify list - really seems to help.
EuroOptics and ScopeList are both AI dealers and have similar notification functionality, but I have yet to hear from them.