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Thread: Has Springfield abandoned the internal locking system?

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  1. #1
    Join Date
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    Has Springfield abandoned the internal locking system?

    I read on another, non-1911-specific forum that they had. I wasn't aware of this. Is it true? If so, does anyone know why? Did Springfield make any sort of announcement about it, or just quietly stop using it?

    And ... if they have dropped the ILS, are they still using a 28-pound mainspring, or have they switched to an industry-standard 23-pound spring?
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside

  2. #2
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    The latest Springfield owners manual (2/13/2016) still shows the ILS, so if they are dropping it, it must be a recent development. I wish they would. It's the only negative in a fine line of pistols.
    "The 1911 was the design, given by God to us through John M. Browning, that represents the epitome of what a killing tool needs to be. It was true in 1911 and it's true now." - Col. Robert Coates commanding, U.S. Marine Corp Special Operations Command Detachment 1 (DET 1)

  3. #3
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    Quote Originally Posted by garrettwc View Post
    The latest Springfield owners manual (2/13/2016) still shows the ILS, so if they are dropping it, it must be a recent development. I wish they would. It's the only negative in a fine line of pistols.
    The first thing I did when I bought my 2 RO's was remove the ILS.

  4. #4
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    I specifically asked Springfield in their query box and was told that of 2016 it has been dropped.

    Any of the recent production models no longer have the key lock holes in the mainspring housing.
    Likes (2) :
    carsten1911 (24th March 2017), John (29th October 2016)


  5. #5
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    Wonder if they still have that nasty 28 lb. mainspring? Changing that made a much bigger difference in my Loaded's trigger weight than I would have thought.
    I'm retired. That's right, retired. I don't want to hear about the cop who stopped you today or how you didn't think you should get a ticket. That just makes me grumpy!

  6. #6
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    Quote Originally Posted by UncleEd View Post
    I specifically asked Springfield in their query box and was told that of 2016 it has been dropped.

    Any of the recent production models no longer have the key lock holes in the mainspring housing.
    Thanks, I wasn't aware of the change.

  7. #7
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    Thanks. The new models I have seen in gun stores down here do not have it. I have left in in my ROs ......so far. I will probably swith it out in the future and put the original parts in the box the pistol came in.
    NRA Life Member

  8. #8
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    Yep, I bought a new RO last week, no ILS, but the manual still tells all about it and shows the location. A little confusing for a 1911 newbie.
    Likes (2) :
    Rick McC. (21st December 2016), woolieworm (27th November 2016)


  9. #9
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    Welcome from south Texas. Shoot it in good health, Pappy.
    " I'm your huckelberry".

  10. #10
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    Since I never used it, I completely forgot about it. Never effected my shooting.
    The bravest are surely those who have the clearest vision of what is before them, glory and danger alike, and yet notwithstanding, go out to meet it.

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