Spikes Tactical Barking Spider muzzle device for 5/8 thread. Works fantastic for AR Pistols. Good for 300 Blackout or 308. Cuts flash and rise. Includes "glass breaker end". Comes with 2 end caps. I have over $180 into it, sell for $75.

Check the below links for info:

 

https://www.spikestactical.com/collections/muzzle-devices/barking-spider-2-brake/

 

https://www.spikestactical.com/collections/muzzle-devices/barking-spider-dynacomp-end-cap/

 

https://youtu.be/26PmmvAscuU?si=TWF2-XVVQrqggbD6