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Thread: LaRue MBT-2S trigger pull weight

  1. 12-21-20, 22:10 #1
    Captains1911
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    LaRue MBT-2S trigger pull weight

    I have 5 of these, all with the heavy trigger spring installed. 4 of them break between 4.5 - 5.0 lbs. The other one breaks around 3.5 lbs which is a bit lighter than I prefer. I emailed LaRue about it but received no response. I’m curious what pull weights other people are measuring.
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  2. 12-22-20, 00:37 #2
    223to45
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    Never measured any of mine.

    Currently running 2 with the standard spring.

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  3. 12-22-20, 09:05 #3
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    2.5# first stage, 4.75# total pull weight. LaRue HD spring.
    RLTW

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  4. 12-22-20, 09:28 #4
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    Confirming, 3.5lbs with the heavy installed?
    Stick


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  5. 12-22-20, 09:56 #5
    Captains1911
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    Quote Originally Posted by Stickman View Post
    Confirming, 3.5lbs with the heavy installed?
    Correct, 3.5# total pull weight with heavy spring. Consistent measurement on my Lyman gauge.
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  6. 12-22-20, 12:27 #6
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    Quote Originally Posted by Captains1911 View Post
    Correct, 3.5# total pull weight with heavy spring. Consistent measurement on my Lyman gauge.
    Sounds like the light springs are installed.
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  7. 12-22-20, 12:38 #7
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    Have the trigger(s) been swapped between lowers?

    Lower receiver pin hole spacing may affect final pull weight.

    Quote Originally Posted by Captains1911 View Post
    I have 5 of these, all with the heavy trigger spring installed. 4 of them break between 4.5 - 5.0 lbs. The other one breaks around 3.5 lbs which is a bit lighter than I prefer. I emailed LaRue about it but received no response. I’m curious what pull weights other people are measuring.
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  8. 12-22-20, 12:52 #8
    Captains1911
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    Quote Originally Posted by georgeib View Post
    Sounds like the light springs are installed.
    No. This is with the heavy spring
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  9. 12-22-20, 13:03 #9
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    Quote Originally Posted by Captains1911 View Post
    No. This is with the heavy spring
    Yeah, I know. It's acting like the light spring is installed. Probably the geometry on the sear.
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  10. 12-22-20, 13:10 #10
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    Quote Originally Posted by georgeib View Post
    Yeah, I know. It's acting like the light spring is installed. Probably the geometry on the sear.
    Or mislabeled spring. OP, take some calipers to that spring wire. The HD type is thicker.
    RLTW

    “What’s New” button, but without GD: https://www.m4carbine.net/search.php...new&exclude=60 , courtesy of ST911.

    Disclosure: I am affiliated PRN with a tactical training center, but I speak only for myself. I have no idea what we sell, other than CLP and training. I receive no income from sale of hard goods.
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