Thanks for that link!Preppers has them for $31.99. They did have 10 rounders for $23 but out now.
I ordered some HK magazines from Preppers and they came sealed in factory HK package.
Decent price on HK45 magazines too.
A good way to search is to punch the SKU in Slickguns.com.
Thanks for the heads up. I've got a few more USP and P30 mags heading my way.USP 45 12-rounders for 34.80 seems like a nice deal as well https://www.preppergunshop.com/mag-hk-usp-fs-t-45-12rd-fr