User blog comment:AntiScootaTwo/Future Patches/Updates: What I would like to see/@comment-1263839-20130222085837/@comment-1263839-20130223184228

It's supposed to effect recoil, otherwise it just literally makes your weapon a laser gun, as evident from LMGs.

And quote from Target Finder's page: "Even with the lower recoil advantage, the sight covers the whole screen and renders the player nearly immobile"