I filed down the weld and removed the muzzle break because it was way too loud, hurt even with earplugs on. I want to buy a muzzle nut to put over it but would it be in violation of 922r since I removed it and made the threads available again? I dont have the tools to weld it back on and I mainly just want the nut to protect the threads. Ran almost 1000 rounds of light ball in the past week and love it with no problems. Am looking into the 8x42d from Kalinka.