Hey, I have been playing paintball for quite some time now because there was never an airsoft field anywhere near me. Recently one opened up and one of the refs there said they would like to see me play there (used to be a paintball ref). The only gun I had was some cheap crosman AEGs from my childhood, BUT I do have a GBB 4.5mm METAL bb pistol. (search up gsg 92) It's just as realistic as can get and as good quality as the high end GBB airsoft pistols, even modded it to go full auto (which was disabled). Anyways since it can field strip (like the real thing) You can replace the barrel. So all I'd have to do is replace the barrel and magazine and it can shoot 6mm bbs! The only problem is I can't really find either of those Can anyone recommend a barrel or Mag that can work with my gun???? Here's some stock photos of the gun.