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Thread: Vintage Large Pin Lower Parts Kits - what's the solution?

  1. #1
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    Vintage Large Pin Lower Parts Kits - what's the solution?

    I have a couple of older stripped Colt Lowers which use the larger pin lower parts (fire control, etc.). Most websites offer only the newer small pin parts kits. What's the solution for finding these from a regular supplier, or do people do some kind of adapter kit?
    Maj. USAR (Ret) 160th SOAR, 2/17 CAV
    NRA Life Member
    Black Mesa Ranch. Raising Fine Cattle and Horses in San Miguel County since 1879

  2. #2
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    Geissele and others have large pin SSA and upgraded triggers.

    https://geissele.com/super-semi-auto...large-pin.html

    https://velocitytriggers.com/product...gger-straight/

    https://www.cmctriggers.com/cmc-ar-1...5lb-large-pin/

    And there are various offset pins available to adapt normal pin uppers.

    https://www.fulton-armory.com/fronto...holeupper.aspx

    The rest of the small parts you can fill in with a no-trigger parts kit.

    Enjoy your new builds!

    Dennis.
    Last edited by Dennis; 12-08-19 at 13:58.

  3. #3
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    Quote Originally Posted by Dennis View Post
    Geissele and others have large pin SSA and upgraded triggers.

    https://geissele.com/super-semi-auto...large-pin.html

    https://velocitytriggers.com/product...gger-straight/

    https://www.cmctriggers.com/cmc-ar-1...5lb-large-pin/

    And there are various offset pins available to adapt normal pin uppers.

    https://www.fulton-armory.com/fronto...holeupper.aspx

    The rest of the small parts you can fill in with a no-trigger parts kit.

    Enjoy your new builds!

    Dennis.
    Thanks, this is a Winter project I am undertaking. I have an stripped small pivot pin Govt. Carbine lower and stripped A2 upper that I will turn into a civilian version of the Colt 727, utilizing an M4 barrel. I looked at the link to the Geissele trigger group and it is pricey at $300. It must be good stuff?
    Maj. USAR (Ret) 160th SOAR, 2/17 CAV
    NRA Life Member
    Black Mesa Ranch. Raising Fine Cattle and Horses in San Miguel County since 1879

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    Getting the words 'Geissele' and 'pricey' in one sentence is no challenge at all. However, it is good stuff; their triggers will spoil you for anything else.
    Moon

  5. #5
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    Quote Originally Posted by halfmoonclip View Post
    Getting the words 'Geissele' and 'pricey' in one sentence is no challenge at all. However, it is good stuff; their triggers will spoil you for anything else.
    Moon
    I may have to take a closer look. None of my AR's have never had anything but factory trigger groups in them. But I am not a competition precision shooter.
    Maj. USAR (Ret) 160th SOAR, 2/17 CAV
    NRA Life Member
    Black Mesa Ranch. Raising Fine Cattle and Horses in San Miguel County since 1879

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    Unhappily, I got an SSA for one AR, then the rest felt like crap. I'm not a precision guy either, but the SSA is two stage, but light/crisp enough to make it easy to shoot. But it isn't so light that it would be a problem in a 'social' situation.
    The SSA is more like $200.
    Moon

  7. #7
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    Quote Originally Posted by OH58D View Post
    Thanks, this is a Winter project I am undertaking. I have an stripped small pivot pin Govt. Carbine lower and stripped A2 upper that I will turn into a civilian version of the Colt 727, utilizing an M4 barrel. I looked at the link to the Geissele trigger group and it is pricey at $300. It must be good stuff?
    Looks like Geissele charges more for their large pin trigger, but I have bought plenty of their small pin triggers at close to that price. The SSA is a two stage trigger that feels like a light precision Garand trigger and as someone else posted have ruined me for any other triggers. I have multiple SSA, SSA-E, SDC, SDC-E, and a SD3G trigger and have had no issues except expensive triggers in tens of thousands of rounds over the past decade or more.

    I have tried various other precision and cartridge triggers and none have the same solid precise feel as Geissele.

    Dennis.

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