so I got the rebuild kit cuz it always feels good to be at the field and be able to fix anything that is going wrong with the G4 the kit has every o-ring, springs, ball detents, Barings you need except for the back bumper on the actual bolt which is going to be the most replace oring/bumper on the gun and guess what its not there very upset... how can a rebuild kit not include one of the most replaceable parts.... everything (oring) you need to rebuild your gun? I THINK NOT!!!
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