Had a Little Troube With My Trigger at the Range

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ewetstone
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Had a Little Troube With My Trigger at the Range

Post by ewetstone » 21 Mar 2015, 10:51

I was having some fun two days ago with the FsN at the range and mid mag I pulled the trigger only have it move just a little bit. At first I thought I had a jam of some type so I dropped the mag and pulled the slide bake a bit only to find the round sitting in the chamber with no other rounds jamming the inside the gun or mag.

I reinserted the mag and ejected the live round from the chamber. The next one chambered fine, went to pull the trigger...same thing. Trigger pulled back just abit and stopped. I then repeated the above but with the gun empty I gave the side of the gun several sharp knocks of my hand, reinserted the mag, slingshot the slide to put one in the chamber and pulled the trigger. success...round fire fine as did the remaining of the mag. The round that it occurred on fired successfully by the way so it was not a bad round....just the trigger barely moved.

I have not had the problem again shooting about 70 more rounds thru it.

Thoughts?? Did the trigger not get reset that one time?? I am new to the platform so I am not familiar with trouble shooting the trigger mechanism.

Any help would be appreciated...Thanx gentlemen.

ETA: I don't believe it is relevant but the ammo was AE.
Last edited by ewetstone on 21 Mar 2015, 18:31, edited 1 time in total.

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Rapier1772
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Re: Had a Littlee Troube With My Trigger at the Range

Post by Rapier1772 » 21 Mar 2015, 11:06

First guess, some kind of debris got lodged in the frame which prevented the trigger from actuating. Did you recover the brass? Any chance it was a blown primer?
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ewetstone
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Re: Had a Littlee Troube With My Trigger at the Range

Post by ewetstone » 21 Mar 2015, 11:21

Rapier1772 wrote:First guess, some kind of debris got lodged in the frame which prevented the trigger from actuating. Did you recover the brass? Any chance it was a blown primer?
No...I re-chambered the same round after giving the side of the gun a few jars with my hand and it fired just fine as did the rest of the mag not to mention another 70 or so rounds. When it happened the trigger was only able to move a little bit...no positive "click". Basically it really couldn't be pulled. Like the trigger itself was jammed. Is there a reset that has to occur after the pull of the trigger?

DoubleJ
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Re: Had a Littlee Troube With My Trigger at the Range

Post by DoubleJ » 21 Mar 2015, 11:59

I'm with Rapier, sounds like something got in there. Maybe a blown primer, some other debris, an anvil? I'd take it out of service as a carry/HD gun if that's what it is until you've got some more rounds through it to verify that everything is good. If you pull the slide off, you can watch the internal workings function from the top as you work the trigger. Try that out, see if anything looks amiss.

ewetstone
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Re: Had a Littlee Troube With My Trigger at the Range

Post by ewetstone » 21 Mar 2015, 13:02

DoubleJ wrote:I'm with Rapier, sounds like something got in there. Maybe a blown primer, some other debris, an anvil? I'd take it out of service as a carry/HD gun if that's what it is until you've got some more rounds through it to verify that everything is good. If you pull the slide off, you can watch the internal workings function from the top as you work the trigger. Try that out, see if anything looks amiss.
I did do that when I got home. I manually worked the trigger while watching the internal hammer. I wasn't quite sure whether it was a good idea to just let the hammer hit the (don't know what the part is called) so I used a tooth pick to block it to keep it from smacking something that maybe it shouldn't while the slide is off. Anyway, everything appeared to operated fine as far as I could tell.

As for carry/HD I agree and will make another range visit to put another several hundred rounds thru to make sure the problem does not re-occur.

As for a blown primer, if that had occurred would the round still have detonated properly and sent down range correctly?

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Rapier1772
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Re: Had a Littlee Troube With My Trigger at the Range

Post by Rapier1772 » 21 Mar 2015, 13:37

ewetstone wrote:As for a blown primer, if that had occurred would the round still have detonated properly and sent down range correctly?
Yes. Pierced & blown primers will still fire correctly, the problem occurs on subsequent shots. The primer or piece of the primer gets lodged somewhere & prevents the gun from firing on follow up shots. It can be hard to figure which round did it as it might not happen on the immediate next shot, the piece might wiggle into interference a few shots later.

That's why I asked about if you recovered the brass, so you could inspect cases & see if you had lost or pierced a primer.
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ewetstone
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Re: Had a Littlee Troube With My Trigger at the Range

Post by ewetstone » 21 Mar 2015, 13:50

Rapier1772 wrote:
ewetstone wrote:As for a blown primer, if that had occurred would the round still have detonated properly and sent down range correctly?
Yes. Pierced & blown primers will still fire correctly, the problem occurs on subsequent shots. The primer or piece of the primer gets lodged somewhere & prevents the gun from firing on follow up shots. It can be hard to figure which round did it as it might not happen on the immediate next shot, the piece might wiggle into interference a few shots later.

That's why I asked about if you recovered the brass, so you could inspect cases & see if you had lost or pierced a primer.
Well...It didn't occur to me to look for the brass at the time. What I will do though now is go back and remove the slide again and make a closer look for any foreign material that may still be in there.

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grimmond
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Re: Had a Littlee Troube With My Trigger at the Range

Post by grimmond » 21 Mar 2015, 14:00

When cleaning you can dry fire to dislodge any pierced primer material.
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ewetstone
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Re: Had a Littlee Troube With My Trigger at the Range

Post by ewetstone » 21 Mar 2015, 16:37

grimmond wrote:When cleaning you can dry fire to dislodge any pierced primer material.
Thanx...I will do that.

Is it ok to reset the hammer and pull the trigger with the slide off?

DoubleJ
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Re: Had a Littlee Troube With My Trigger at the Range

Post by DoubleJ » 21 Mar 2015, 17:08

Never tried, but I'd say if it's impacting something, then no. Your toothpick idea sounds good, so long as that doesn't leave any debris. I had a primer get into the trigger group of my AR once, and it would lock the trigger up every now and then, I'd whack it, continue on, and then it would stop. Was a bear to get out at the range without any tools once I saw it floating around down there.

ewetstone
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Re: Had a Littlee Troube With My Trigger at the Range

Post by ewetstone » 21 Mar 2015, 19:01

DoubleJ wrote:Never tried, but I'd say if it's impacting something, then no. Your toothpick idea sounds good, so long as that doesn't leave any debris. I had a primer get into the trigger group of my AR once, and it would lock the trigger up every now and then, I'd whack it, continue on, and then it would stop. Was a bear to get out at the range without any tools once I saw it floating around down there.
Right....it makes me think of AR lowers and how you never want to pull the trigger without the upper on due to the possibility of cracking the lower receiver. I just wasn't sure if it was a good idea in the case of the FsN lower.

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Re: Had a Little Troube With My Trigger at the Range

Post by blueorison » 22 Mar 2015, 10:34

I echo the blown primer comment. Happens often in ARs, too.
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