https://www.joeboboutfitters.com/Blackhawk-SilencerCo-ASR-Muzzle-Brake-1-2x28-p/bh-72mb2201bk.htm
Interwebs say these are supposedly made by silencerco for Blackhawk...IDK. Other styles available on sale as well.
Interwebs say these are supposedly made by silencerco for Blackhawk...IDK. Other styles available on sale as well.