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Author Topic: Trigger reset  (Read 895 times)

Offline 9Shooter

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Trigger reset
« on: May 28, 2009, 12:23:14 PM »
After assembling my lower a while back, a LAR receiver and Double Star LPK, I found during the function check that it does not reset unless the trigger is pushed forward.  At first I thought maybe it needed to be lubricated and that it was just sticky, but that didn't help.  I'm not sure if I should take a metal file to it or if normal wear would make it better.  Anybody run into this or have a recommendation to fix it?
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Offline Keebsley

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Re: Trigger reset
« Reply #1 on: May 28, 2009, 01:01:19 PM »
Might want to check if you installed the springs correctly and also check your hammer etc to see if it is engaging or binding on something inside.
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Offline birddog1989

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Re: Trigger reset
« Reply #2 on: May 28, 2009, 01:59:32 PM »
Sounds like the trigger spring might be in backwards or the ends of your hammer spring could be
wedged between the coils on the trigger spring instead of sitting on the outside of the trigger
spring.  A pic of the inside of your lower, from the top down, would help if that doesn't work.
You shouldn't have to file anything.  If you remove to much material from the disconnector you
can have a runaway gun.  Besides the inner parts are hardened and you can ruin a good file, or a
bad one for that matter, quick.  At the most polish the engagement surfaces with a stone to
remove any burrs.  Hope this helps.
« Last Edit: May 28, 2009, 10:16:00 PM by birddog1989 »
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Offline 9Shooter

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Re: Trigger reset
« Reply #3 on: May 28, 2009, 02:06:00 PM »
I'll take a pic or two later tonight if I have time before leaving for pizza.  I'm pretty sure I have the springs in correctly but as it is the first I have assembled, I could be wrong.  The point on the disconnecter where it contacts the hammer feels like it might have an edge on it.  My first guess was that it was enough to bind slightly.  Beyond that, it appears that everything functions correctly.
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Offline fj40mojo

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Re: Trigger reset
« Reply #4 on: May 28, 2009, 02:47:07 PM »
birddog knows his shizzle. Former USMC armorer/machine gunner/security forces etc, etc.  Current LE firearms instructor, blah blah blah. Has put together my AR in many configurations over the years.
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Offline birddog1989

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Re: Trigger reset
« Reply #5 on: May 28, 2009, 10:26:54 PM »
Forgot to tell you that they have exploded views on Brownell's web site for reference.  I heard the gunsmith down there at Shooting World is a good guy to work with but I haven't talked to him myself.
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When the last deer disappears into the morning mist,
When the last elk vanishes from the hills,
When the last buffalo falls on the plains,
I will hunt mice, for I am a hunter,
And I must have my freedom.
                             Chief Joseph, Nez Perce

Offline GrayWolf

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Re: Trigger reset
« Reply #6 on: May 28, 2009, 11:09:03 PM »
Quote from: birddog1989 on May 28, 2009, 10:26:54 PM
Forgot to tell you that they have exploded views on Brownell's web site for reference.  I heard the gunsmith down there at Shooting World is a good guy to work with but I haven't talked to him myself.

Where is Shooting World?
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Offline Jeff

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Re: Trigger reset
« Reply #7 on: May 28, 2009, 11:20:18 PM »
It's Impact Guns now. The gunsmith is a member here. I think he's DuckKiller88. ;)
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Offline birddog1989

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Re: Trigger reset
« Reply #8 on: May 29, 2009, 12:48:59 AM »
yeah that place  ;D
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When the last deer disappears into the morning mist,
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When the last buffalo falls on the plains,
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And I must have my freedom.
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Offline 9Shooter

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Re: Trigger reset
« Reply #9 on: May 29, 2009, 08:49:42 AM »
I tried to take a couple of pics but they turned out poorly.  Not sure if you will be able to see anything useful, but until I can get clearer shots I'll post what I have.
[attachment=1]
[attachment=2]
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Offline e11charlie

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Re: Trigger reset
« Reply #10 on: May 29, 2009, 09:19:18 AM »
What about the seer spring is it in there?
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Offline 9Shooter

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Re: Trigger reset
« Reply #11 on: May 29, 2009, 09:27:21 AM »
I followed the directions at ar15.com when it was assembled. Other than an extra detent and detent spring that were in the lpk, I had no extra parts. I'm confident everything is in there that should be. I will still double check positioning and orientation of the springs.
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Offline birddog1989

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Re: Trigger reset
« Reply #12 on: May 29, 2009, 09:31:11 AM »
It looks like you have the guts in right.  I'd try getting rid of that rough spot you were talking about and go from there.  I've had that show up before and it's a pisser >:(.
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When the last deer disappears into the morning mist,
When the last elk vanishes from the hills,
When the last buffalo falls on the plains,
I will hunt mice, for I am a hunter,
And I must have my freedom.
                             Chief Joseph, Nez Perce

Offline 9Shooter

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Re: Trigger reset
« Reply #13 on: May 29, 2009, 09:45:12 AM »
Thanks birddog, I'll give that a try.
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Offline Keebsley

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Re: Trigger reset
« Reply #14 on: May 29, 2009, 10:56:35 AM »
I'd take it down to Impact and have Chase take a look at it to diagnose it.  Hard to tell without having it in hand.
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Offline Joey

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Re: Trigger reset
« Reply #15 on: May 29, 2009, 12:09:07 PM »
+ 1 on that, let Chase take a look.
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Offline luckypunk

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Re: Trigger reset
« Reply #16 on: May 29, 2009, 08:11:27 PM »
1.  take out the hammer.  
2.  diagnose if at this point it resets by itself
3.  ??
4.  Profit!
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Offline e11charlie

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Re: Trigger reset
« Reply #17 on: May 29, 2009, 09:43:40 PM »
If you live in Caldwell I could take a look at it.
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