I am currently shooting a SIG SP2022 with a scope brace. Here is a picture of the brace mounted on my P229.
View attachment 986540
The P229 has the SIG rail, not the same as the picatinny rail. The scope mount is a tight fit on the P229, but not as tight on my SP2022 with a picatinny rail, which maybe explains why I have a tough time finding real accurate loads with my SP2022.
Like that mount, checked out the website, $29 for the mount, not bad, go to check out....$30 shipping. Guess I'll be waiting till it's mass available.