590a1 bead sight

Discussion in 'General Shotgun Discussion' started by FernandoTheCommando, Oct 15, 2013.

  1. FernandoTheCommando

    FernandoTheCommando New Member

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    Anyone change the bead sight on a 590a1 with a heavy barrel? Mine is chipped and I've been looking for a new one. I called
    Mossberg and they said their standard brass bead sight fits. But...I read reviews on midway and some people said the threads didn't match. I read reviews for the tru glo bead sight that said people stripped the threads because it stopped 3/4 of the way from parallel and they forced it the rest of the way. Thought, ideas, suggestions? And no, im not switching to ghost rings or a red dot. Oh and the bead sight on mine was parkerized but it looks like Mossberg only sells one in a brass or white finish.
     

  2. John_Deer

    John_Deer New Member

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    call mossberg tech support to find out what size the threaded portion of the bead might be. Then you can order a screw on aftermarket bead from brownells, midway, numrich. When you find out what size the threaded portion is post it here so others can find the size by searching.
     
  3. FernandoTheCommando

    FernandoTheCommando New Member

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    That's the problem I'm having. Mossberg said the 5/40 thread pattern for the brass bead sight works. But, someone posted on MIDWAY that it didn't thread into the a1 heavy barrel. Mepro light makes one too but people complained about threads stripping. I'm gonna order the one from Mossberg and try it out. I might go the way of a red dot eventually but for now I'll try the new bead.
     
  4. John_Deer

    John_Deer New Member

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    The white beads for the front are very durable. The brass bead is for the rear sight on a vent rib. I have never had an issue with the white front bead.
     
  5. FernandoTheCommando

    FernandoTheCommando New Member

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    I saw a different brass bead for the rear sight on the vent rib. Someone said the white sight is for the front on a vent rib barrel and that the white bead threads extend too far into a non vent rib and will need to be filed down. Eh for $3 a piece I guess I'll just order them both and see which one fits. Have you put the white bead from Mossberg on the front of a standard non vent ribbed barrel? Or have you put one on a 590a1 with heavy barrel?
     
  6. deathkricket

    deathkricket New Member

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    Gander mountain sells a front fiber optic kit for $19 that contains screws for every thread pattern made on modern shotguns and the front fiber sight of course, just a though. I would trust mossberg about their products over a midway or something review. There is a old saying that goes something like you have to be atleast 10% smarter then the equipment you are attempting to operate.
     
    Last edited: Oct 21, 2013
  7. FernandoTheCommando

    FernandoTheCommando New Member

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    Well said. I just ordered a few brass beads from midway. They are Mossberg factory replacements. Will update when I get them mounted. Anyone know off hand the size wrench/small socket to get the bead off? I've heard about the sock over the pliers trick.
     
  8. deathkricket

    deathkricket New Member

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    I have a very fine long pair of needle nose pliers I use. Don't forget a tiny drop of lock tight.
     
  9. FernandoTheCommando

    FernandoTheCommando New Member

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    Update. Got the Mossberg brass front bead in mail today. It threaded right into the heavy barrel on my 590a1. So, for anyone like me, who read a customer review that said it doesn't fit the a1 heavy barrel, they were incorrect. It fits perfectly.
     
  10. deathkricket

    deathkricket New Member

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    Glad you were able to make it work out, enjoy your new bead and.. try not to break this one ;)
     
  11. DrumJunkie

    DrumJunkie New Member

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    I like to read reviews but I don't always trust them. Someone could have cross threaded the sight and then complained because they where too stupid to understand what they did.:eek:

    Glad you got it all together.:)
     
  12. FernandoTheCommando

    FernandoTheCommando New Member

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    Ha! Thanks. Although this one was chipped from the gun store since brand new. But, now that I know it fits, I'll just buy a bunch more. :D