Thread: Changing AR to A cat from E.

When I brought my AR off a forum member his AO said this wasn't possible. So I got my dad to buy it on his E and his AO had no problem swapping it over to A. Dad's AO wanted an explination of where the E cat parts where going cos they could potentially be used to create a scary dangerious E. It's a fair question. He said he was keeping the bits for us on his E cat AR and they were happy with that.