So FYI... Sportsman's seems to have the optics ready version for the same price as the regular version. The picture is of the standard version, but everything else in the description and specs says optics ready.

https://www.sportsmans.com/shooting-gear-gun-supplies/handguns/stoeger-str-9c-optics-ready-9mm-luger-38in-matte-pistol-101-rounds/p/1743830

Funny enough, this is the listing I bought mine, and it was on sale at the time for $247.99. I got 5% more off with the military discount and then the rebate. But this listing shows the Pic for the optics ready version but the description doesn't go into it. https://www.sportsmans.com/shooting-gear-gun-supplies/handguns/stoeger-str-9c-9mm-luger-38in-black-pistol-131-rounds/p/1795561

So if someone wants to chance ordering from the first link. Or going into a store (if it's local). Would save you the FFL fees. And an easy argument if there's a mixup.

I only paid $18 more for the optics ready version last month. Thank you Sportsman's Warehouse.

And apparently Sig P226 magazine work. The mec gar 20rd ones are around $25. Haven't tried them yet. It's just what I read.

And honestly, it's a much nicer shooting gun than it's price point indicates.