I’m confused. I’m having a rifle built and have an APA brake. I also have a tbac Ultra 7 that I want to be able to go back and forth with. My tbac is in nfa jail but I was told comes with a compact brake. If I want to direct thread the can on my barrel, do I need to have my gunsmith thread my barrel to 5/8x24? I want to be able to take off the APA brake and thread my tbac on when I want. What do I need and what do I need to tell my smith?