So, I know there will be at least one person this appeals too. I can't personally see this as viable for me, personally, but then again I am a 1911 guy.
So, without further ado, I give you a drop in .50GI UPGRADE
for your Glock 20 & 21.
If someone does this, you have to post pictures of your targets AND
your wrists after a day at the range.