Some current pics of the 20 and 21SF. Some more mods added to them :).
Glock 20
Glock 21 SF
I was under the impression that the 21 SF has a picitiny rail?
You can get them with or without.
Impressive as always Ray T!
Thanks again M4arc ! 
Very impressive work. I want some.
Here you go! 
How’s that stippling on the hand during recoil?
Interesting grip cutouts by the mag.
The stippling is comfortable even with the full power 10mm Double Tap loads.
The way I do my stippling is not so aggressive that it will tear up your hands, concealment cover, or even bucket seats in a sports car (tested it already). The polymer flexes somewhat and is easier on the hand than 30 lpi checkering on a 1911.
The cut outs helps give the owner a better grip to rip the magazine out if the magazine gets stuck.