I shot a SBR AR-15 once. Wow, a real ear killer.
I put a 74 brake on one of my Draco’s just to make it obnoxiously loud. It was less an AK pistol and more like a flashbang launcher at that point. I shot it without ear pro for the full effect and HOLY CRAP that thing is just stupid loud. And fun.
I got like 20 AK flash hiders, brakes, compensators etc laying around and they’re all 1/2x28 so I can throw anything on anything, as far as all my AKs go. I do the same thing with optics and scopes for them too.
If you need a good flash suppressing comp I recommend the PWS FSC in whatever caliber you’re running, first gen if you can find one. S cond gen doesn’t have the prongs at the front anymore and they’re known to sometimes (rarely, once or twice per mag) to collect unburnt powder in vents near the tip and they CAN flash if the gas hits it just right. Other than that, it’s a superb como. That’s not a huge issue for me, just something to be aware of
There is a significant drop in barrel pressure and noise level as a barrel gets longer. A very nice study is available at the link EFFECTS OF BARREL LENGTH ON BORE PRESSURE, PROJECTILE VELOCITY and SOUND MEASUREMENT