I would have to do a bit of geometry tomorrow to determine if any tricks like peening the dovetail or staking the bottom, or even shimming would work, but at first blush, it’s clear the 3/8” dovetail HiViz sight will absolutely not drop into your 10mm dovetail slot. It will be undersized and too loose. Shimming MAY work, but again, I’d want to do the geometry before I spent the money.

Failing success from these tricks, I have bought sights from Fermin Garza, he could potentially produce a custom sight for your desires. I’ve only bought revolver sights from him, and they’re not cheap, but the quality is second to none.