I ordered some parts for my Gen5 pistols a month or two ago from Glockstore.com. I think I've received all but one part. If there's something you need, just place the order and wait. The sooner you get in line, the sooner you get your parts.
Kind of disappointing for the value proposition of spending time and money to get Armorers certification only to not have access to parts. I have run the course a couple of times to get updated for personal usage (non-LE) . Signs of the times these days I suppose. I keep getting the 1984 what is up is now down frame of reference.
Heavy sigh....