FRT from aug.frt with ratworx 20/20 sear

This one is configured for a NATO stock with bolt release. I bought it to use with my 9mm set up but it does not work with the Heresy Designs 9mm conversion. 
I did use it with my 300 Blackout assy and after emptying a full mag of sub-sonic rounds in a few seconds-$$$ ➡️ down range. I decided to let it go. 
It will operate with 5.56 as well. 
It was pricey but I am open to a cash offer or a trade.