Bigghoss
04-05-2016, 05:43 PM
I have a Mossberg 500 shotgun and I decided I wanted to swap a 590 barrel and magazine tube on it. I bought an 18.5" 590 barrel and a 590 5 shot magazine tube which is supposed to work with the 18.5" barrel. I also bought a +2 mag extension from S&J hardware which is flush with the end of the barrel. When I went to assemble everything it was as if the magazine tube was about 2" too short. I checked to make sure the barrel was fully seated in the receiver and it was. I also held the +2 extension up against the barrel lug and sure enough it was flush with the muzzle. I measured the barrel and it is an 18.5" barrel so the only thing left is that the magazine tube is defective or something. The tube I have is just shy of 13.5" but with the way everything lines up it looks like it needs to be 15.5". Can someone tell me what the proper length is of a 5-shot Mossberg 590 magazine tube so I know I'm barking up the right tree?