TO ORDER THIS BRACE FOLLOW THIS LINK TO CORSAIR SPORTS: 
https://www.corsairsports.com/products/sb-tactical-sba3-01-sb-699618782455-sba3-01-sb-3765

THESE BRACES ARE SECONDS FROM THE FACTORY. THEY FUNCTION PERFECTLY. WE USE THEM OURSELVES. 

Designed for all platforms capable of accepting a mil-spec carbine receiver extension, 5-position adjustable, dramatically enhances versatility, and features a minimalist design with an integral, ambidextrous QD sling socket.