Also, I found that Uncle Mikes Sidekick is an inexpensive one, size 7

You can go back to the listing page for this pistol and scroll down about 2/3 the way. There will be a section called "Fit Charts: These 30 items are compatible with this firearm." It will list items intended for use with this pistol including holsters. - See more at: budsgunshop.com/catalog/product_info.php/products_id/87933#sthash.LYaSxqqK.dpuf (It is the section just before where you questions and answers appear.) I have one of these along with several Heritage pistols. I bought my leather ones from Heritage. The nylon holster I bought for this I got elsewhere.

Heritage has a good bunch of them (shopheritagemfg.com) but it is really up to personal preference as some people want open holsters and some want traditional ones. There is a lot more to it than I anticipated (I'm going through the same thing trying to find one). Also, measure at the hips for where it will sit.