Looking to purchase a 20" AR15 bull barrel chambered in .223 Wylde or something similar. I'm looking for a heavy af profile, as close to 1" as I can. Something like Compass Lake's varmint profile with a .936" gas block and .925" muzzle will work. Rifle length gas system and threaded muzzle. Don't care if it's used, stainless, chromemoly, etc., just something that works and isn't shot out.