Jackson Pro Series Signature Mark Heylmun Rhoads RR24-7 Electric Guitar, Ebony Fretboard, LuxWhether or not you're a fan of Suicide Silence's dissonant time changing all things metal sound, there's no denying that the guitar work from Mark Heylmun can put the sound barrier at risk. So much so that Jackson and Mark teamed up to make something that could handle his speed and deliver the amount of heaviness he needs. The Pro Series Mark Heylmun Signature Rhoads RR24 7 is an absolute monster of a 7 string guitar, loaded with all the right