This is a Blade-Tech 5.11 holster setup for a large frame Glock 20/21/21SF.
Comes with both a belt and paddle attachment. Note that these attachments are fully adjustable for any size belt. They can also be adjusted for straight, froward, or back cant. Adjustable tension and definite "snap" when it's seated properly.
Also comes with a training barrel.
I sold the Glock for an XD. So, no need for the holster. I did use this...twice. :lol:
More info here: http://www.blade-tech.com/Revolution-Glock-20-21-21SF-pr-1086.html
The whole kit retail is only $30. I'll sell for $20 plus shipping.
IM me if interested.