Looking for a little guidance if anyone here really knows Mossberg action tubes. I've always read there are three versions: The one with the springs, the one with no dimples and a plastic ring, and the one with the dimples and no plastic ring. But I have a couple I scrounged up that are different and I'm trying to figure out if there's a better one to use on my 590 that I'm swapping foreends on. Both appear to be decades apart in age.
Tube 1: Blued, dimples on the rear end of the tube only, tight plastic ring on front nut.
Tube 2. Parkerized, dimples on the front end of the tube only, loose plastic ring on the front nut. Threads on the tube appear to be crimped down in two places.
Anyone know when these are from and if there's a "better" one?
Tube 1: Blued, dimples on the rear end of the tube only, tight plastic ring on front nut.
Tube 2. Parkerized, dimples on the front end of the tube only, loose plastic ring on the front nut. Threads on the tube appear to be crimped down in two places.
Anyone know when these are from and if there's a "better" one?