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Rear sights for a sig 556

Discussion in 'The Sig Sauer Club' started by scaldwell, Mar 31, 2010.

  1. scaldwell


    Jan 10, 2007
    Lexington, KY
    I just found a sig 556 with optics, but no rear sight. It has the factory front sight. What type of rear sight do I have to buy? Can I use the AR 15 folding or fixed rear sight? Thanks in advance for your help!
  2. glock22357

    glock22357 Got Ammo???

    Mar 1, 2004
    Benton Harbor, MI
    !. Call Sig Sauer.
    2. Shop around the Al GoreWeb for sight sets for your 556, and see if any of the rears will line-up with the factory front sight. You'll proably have to call to get those answers.

  3. WayaX

    WayaX Lifetime Member

    Feb 27, 2007
    Here is what you do:

    Remove the front sight. It's not standard height and it's not adjustable for height. Scrap it.

    Buy either a Samson Industries or Midwest Industries Sig 556 front sight. This sight will use an AR sight post so it's height adjustable, you can put in a night sight, etc. Then go out and buy whatever AR rear sight your heart desires.

    Your other option is a Sig factory Diopter. These are not real swiss diopters and are made by the monkeys in NH. They're generally considered junk and not worth the price Sig is charging for them (almost as much as an AR front and rear set).
  4. Jer


    Jun 20, 2006
    Colorado, USA
    I have a brand new take-off S&W M&P15 front an rear sight set if you're interested. They're match-grade and good as new. Let me know because I was going to list them for sale.
  5. woggie


    Jan 22, 2009
    Frisco, Tx
    OP, double check and make sure you truly don't have the rear sight. I am not sure about the "newer " 556 but the version I have (had it about 18 months) the rear sight folds down INTO the rail and is covered by the optics when installed. Granted, the BU sights are crap (IMHO) but they do at least work and it probably has them. I have thought about replacing with a better set of BUIS but the ones that came with it work just fine for their intended purpose. Let us know if it has them, also I can take a picture of mine if it will help. BTW, you will like the 556.