Took the re-hammered GB out today for a quick 30 round smoke and function test. In every respect it exceeded my expectations for smoothness , accuracy, reliability and O-Yeah soot build up. Holy Moly filthy . 30 rounds transformed the internals into a tailpipe from a crosstown bus. Is this a dirty little secret no one talks about or was my generic gunshow remanufactured stuff especially funky. Do you who shoot them have prefered ammo ,powder or secret magic clean up tricks? Maybe I got the non-turbo diesel model.