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Thread: Sig Saur 1911 Ultra Series 80 to Series 70 Conversion

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  1. #1
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    Sig Saur 1911 Ultra Series 80 to Series 70 Conversion

    I want to convert my 1911 Ultra to a Series 70. The problem is that Brownells sells four different thicknesses of conversion shims. (0.057", 0.030", 0.060" and 0.065"). Their help desk could not tell me which one to buy. Does anyone know which one will fit my Ultra?

  2. #2
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    Have you measured the thickness of your plunger and trigger levers?

  3. #3
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    No I haven't. I was hoping to get this done in one take-down of the pistol. Those series 80 parts are a pain to get back together correctly (at least for me). I am guessing I will have to do that unless I find someone who has done the conversion on this particular 1911 model.

  4. #4
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    Quote Originally Posted by Jimbo46 View Post
    No I haven't. I was hoping to get this done in one take-down of the pistol. Those series 80 parts are a pain to get back together correctly (at least for me). I am guessing I will have to do that unless I find someone who has done the conversion on this particular 1911 model.
    Field strip to remove slide. Pull trigger to lift the series 80 lever. Apply micrometer.
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside

  5. #5
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    Don't drop hammer on frame.

  6. #6
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    Now why didn't I think of that? Thanks!

  7. #7
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    Brownells used to just sell one thickness but since Colt has been using the Series 80 system since 1983 and it is now being used in Para, Remington, Taurus, SIG and other brands then I think the need for fillers of different thickness became necessary.
    NRA Life Member

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