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Timney trigger in Colt M4?

dude1951dude1951 Member Posts: 120 ✭✭
edited January 2014 in Ask the Experts
Will the Timney trigger work in a new Colt m4 without machining? Thought I read somewhere that the Colts had a sear-block or other block of some kind that made the installation more difficult.
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Comments

  • thorhammerthorhammer Member Posts: 991 ✭✭✭
    edited November -1
    I believe the Timney is a drop in trigger in a 1 piece design. My
    concern is the 2 adjustable set screws, they may loosen up over time,
    and using locktite makes them hard to crack to readjust them.

    My experience was having an adjustable bushmaster 2 stage trigger....
    which after putting in the locktite I could not adjust the 1st stage
    and ended up ruining the parts that had the adjusting set screws.
    Bushmaster's website is difficult to order replacement parts and
    explored other triggers.

    I have a Bill Geissele SSA 2 stage non-adjustable trigger
    and I'm very pleased with it. The first stage is 2.0 lbs and the
    2nd stage is 2.5 lbs. He also has match grade 2 stage triggers
    all for AR15 and military quality triggers. His website explains
    the differences and I would check it out before laying out a lot of
    money on a trigger.
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  • dcs shootersdcs shooters Member Posts: 10,870 ✭✭✭
    edited November -1
    Just put one in one of mine. Makes a world of difference [^]
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  • 45er45er Member Posts: 245 ✭✭
    edited November -1
    Thor, for clarification.. did you use Red or Blue Loctite?
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  • tsr1965tsr1965 Member Posts: 8,682 ✭✭
    edited November -1
    I have installed the Timney's in most of my AR's. They are simple.

    If you are installing in a new M-4, you should have no problem. As far as I kknow those blocks you were talking about, were for early models that had been made for military use, including the extra hole for the auto sear pin, and the bottom was hogged out to accept the auto sear. They drilled the auto sear pin hole bigger, then stuffed a block in there so you could not use a lightning link or DIAS. The new ones, machined for cicilian use, should be no problem for the Timney.

    As far as the set screws, the only reason they were put in there was to provide tension on the hammer pin, and trigger pin, to keep them from dropping out, as there is NO other means of retention...yes, as there are no spring detents in the Timney for those pins to be retained with. While I do use the set screws, I use the blue Loctite, but I do not rely on it. I got a $40.00 set of anti-walk pins.

    Best
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  • dude1951dude1951 Member Posts: 120 ✭✭
    edited November -1
    tsr1965 thank you I think you hit the nail on the head. I thought that could be the situation but just wasn't clear. Now to order the trigger. Love Colts but the trigger really sucks!
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  • cpermdcpermd Member Posts: 5,273 ✭✭✭
    edited November -1
    quote:Originally posted by dude1951
    Will the Timney trigger work in a new Colt m4 without machining?


    Yes
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  • GeriGeri Member Posts: 2,102 ✭✭✭
    edited November -1
    Purple locktite. Jewel trigger. Works for me.
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  • 25-0625-06 Member Posts: 382 ✭✭
    edited November -1
    Sir, you do not need Loctite on the set screws. There are four of them. Put in the first two and then the other two on top of the first two. If tight, they will not come loose. I have six of them, one in a 308 DPMS, never had a problem with any coming loose.
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