For those who have Infinite Gen 4 QD Infinite Muzzle Brakes which feature 13/16-16 external threads, this adapter is designed to convert your muzzle or accessory's threads to 3/4 NPT thread. 3/4 NPT threads allow installation of 10" and 12" Redirects.
Inner Thread: 13/16-16
Outer Thread: 3/4 NPT (National Pipe Thread)
Material: Black Oxidized Steel