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Posted: 2/20/2016 8:56:27 PM EDT
[Last Edit: 2/20/2016 8:58:55 PM EDT by Recusance]
I have a Giessele G2S trigger in a 10.5" SBR that about 30% of the time will not reset.

Hammer spring legs on top of trigger pin, Trigger spring legs oriented to the front.

Round fires, ejects, re-chambers a fresh round, hammer stays to the rear.

Sometimes I can push it forward with my finger, sometimes I can't move the trigger.

Safety on, safety off, pull the trigger........nothing.

Drop mag, clear the chamber, open the upper, yep, trigger is set back past the sear??

Pull trigger, and hammer will fall.

Reload, chamber, fire 5 or 6 rounds.....trigger doesn't reset. Safety on, safety off, push trigger forward, won't move. manipulate the safety on and off, nothing, manipulate the hammer, nothing. look at it for a few second *tick* trigger rests as I am looking at it....

I am wondering if my recoil spring is too light. (I installed a lighter weight spring and standard buffer) But I have an adjustable gas block and I've tuned it pretty low.

Brass flies about 2-4 feet to the two O'clock.

Trigger works perfectly when cycling by hand.

Any tips or suggestions?

I'm going to change the recoil spring back to a standard and bring different weight buffers tomorrow and see what happens then.
Link Posted: 2/20/2016 9:02:02 PM EDT
Same set up works normally with a different FCG?
Link Posted: 2/20/2016 9:02:06 PM EDT
Ibl

in before larue
Link Posted: 2/20/2016 9:03:22 PM EDT
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Originally Posted By titleiiredneck:
Ibl

in before larue
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damn I came here to say this
Link Posted: 2/20/2016 9:03:41 PM EDT
Installed a G2S recently, curious about resolution.
Link Posted: 2/20/2016 9:03:45 PM EDT
Hurr durr super precision






Link Posted: 2/20/2016 9:05:00 PM EDT
Link Posted: 2/20/2016 9:06:04 PM EDT
Does the trigger move freely in the lower?
Link Posted: 2/20/2016 9:18:04 PM EDT
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Wow. never knew......
Link Posted: 2/20/2016 9:22:25 PM EDT
[Last Edit: 2/20/2016 9:22:46 PM EDT by Recusance]
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Originally Posted By ICEMAN19047:
Same set up works normally with a different FCG?
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Yes. Had a standard GI trigger in the gun prior to the G2S install. (however I did swap the buffer and spring prior to this range trip). So I'll swap those back and try again.
Link Posted: 2/20/2016 9:23:06 PM EDT
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Originally Posted By woozman:


damn I came here to say this
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Originally Posted By woozman:
Originally Posted By titleiiredneck:
Ibl

in before larue


damn I came here to say this



Link Posted: 2/20/2016 9:33:56 PM EDT
Is the disconnector spring installed?
Link Posted: 2/20/2016 9:40:03 PM EDT
Curious if the trigger was installed prior to having the gun? I didn't see if you mentioned and making sure the pins are Geissele and grooved correctly.
Link Posted: 2/20/2016 9:45:25 PM EDT

Originally Posted By Recusance:


I have a Giessele G2S trigger in a 10.5" SBR that about 30% of the time will not reset.



Hammer spring legs on top of trigger pin, Trigger spring legs oriented to the front.



Round fires, ejects, re-chambers a fresh round, hammer stays to the rear.



Sometimes I can push it forward with my finger, sometimes I can't move the trigger.



Safety on, safety off, pull the trigger........nothing.



Drop mag, clear the chamber, open the upper, yep, trigger is set back past the sear??



Pull trigger, and hammer will fall.



Reload, chamber, fire 5 or 6 rounds.....trigger doesn't reset. Safety on, safety off, push trigger forward, won't move. manipulate the safety on and off, nothing, manipulate the hammer, nothing. look at it for a few second *tick* trigger rests as I am looking at it....



I am wondering if my recoil spring is too light. (I installed a lighter weight spring and standard buffer) But I have an adjustable gas block and I've tuned it pretty low.



Brass flies about 2-4 feet to the two O'clock.



Trigger works perfectly when cycling by hand.



Any tips or suggestions?




I'm going to change the recoil spring back to a standard and bring different weight buffers tomorrow and see what happens then.
View Quote
Larue MBT



 
Link Posted: 2/20/2016 10:08:15 PM EDT
[Last Edit: 2/20/2016 10:10:24 PM EDT by Recusance]
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Originally Posted By KaiK:
Is the disconnector spring installed?
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Now that is something to look into..................thanks.

Edit.....yes it's there.
Link Posted: 2/20/2016 10:08:56 PM EDT
Does a Function check work as expected?
Link Posted: 2/20/2016 10:10:40 PM EDT
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Originally Posted By Captain_Morgan:
Does a Function check work as expected?
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Works perfectly.
Link Posted: 2/20/2016 10:15:36 PM EDT
Originally Posted By Recusance:
I have a Giessele G2S trigger in a 10.5" SBR that about 30% of the time will not reset.

Hammer spring legs on top of trigger pin, Trigger spring legs oriented to the front.

Round fires, ejects, re-chambers a fresh round, hammer stays to the rear.

Sometimes I can push it forward with my finger, sometimes I can't move the trigger.

Safety on, safety off, pull the trigger........nothing.

Drop mag, clear the chamber, open the upper, yep, trigger is set back past the sear??

Pull trigger, and hammer will fall.

Reload, chamber, fire 5 or 6 rounds.....trigger doesn't reset. Safety on, safety off, push trigger forward, won't move. manipulate the safety on and off, nothing, manipulate the hammer, nothing. look at it for a few second *tick* trigger rests as I am looking at it....

I am wondering if my recoil spring is too light. (I installed a lighter weight spring and standard buffer) But I have an adjustable gas block and I've tuned it pretty low.

Brass flies about 2-4 feet to the two O'clock.

Trigger works perfectly when cycling by hand.

Any tips or suggestions?

I'm going to change the recoil spring back to a standard and bring different weight buffers tomorrow and see what happens then.
View Quote


FWIW, I have a 10.3" SBR with single weight (+delrin spacers) in the buffer weight, standard recoil spring and SLR Adj Gas Block. It works perfect since day one. Check for disconnector spring (or lack thereof). Also, if your are using the "gold" trigger spring change it for the factory black spring!
Link Posted: 2/21/2016 12:40:06 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By robertmegar:


FWIW, I have a 10.3" SBR with single weight (+delrin spacers) in the buffer weight, standard recoil spring and SLR Adj Gas Block. It works perfect since day one. Check for disconnector spring (or lack thereof). Also, if your are using the "gold" trigger spring change it for the factory black spring!
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Originally Posted By robertmegar:
Originally Posted By Recusance:
I have a Giessele G2S trigger in a 10.5" SBR that about 30% of the time will not reset.

Hammer spring legs on top of trigger pin, Trigger spring legs oriented to the front.

Round fires, ejects, re-chambers a fresh round, hammer stays to the rear.

Sometimes I can push it forward with my finger, sometimes I can't move the trigger.

Safety on, safety off, pull the trigger........nothing.

Drop mag, clear the chamber, open the upper, yep, trigger is set back past the sear??

Pull trigger, and hammer will fall.

Reload, chamber, fire 5 or 6 rounds.....trigger doesn't reset. Safety on, safety off, push trigger forward, won't move. manipulate the safety on and off, nothing, manipulate the hammer, nothing. look at it for a few second *tick* trigger rests as I am looking at it....

I am wondering if my recoil spring is too light. (I installed a lighter weight spring and standard buffer) But I have an adjustable gas block and I've tuned it pretty low.

Brass flies about 2-4 feet to the two O'clock.

Trigger works perfectly when cycling by hand.

Any tips or suggestions?

I'm going to change the recoil spring back to a standard and bring different weight buffers tomorrow and see what happens then.


FWIW, I have a 10.3" SBR with single weight (+delrin spacers) in the buffer weight, standard recoil spring and SLR Adj Gas Block. It works perfect since day one. Check for disconnector spring (or lack thereof). Also, if your are using the "gold" trigger spring change it for the factory black spring!

Has the black spring.

Everyone is giving great suggestions......
Link Posted: 2/21/2016 12:47:18 AM EDT
[Last Edit: 2/21/2016 12:53:00 AM EDT by Evintos]
Brass ejecting to the 2 o'clock? That don't seem right to me. Should be ejecting to the 3:30 - 4 o'clock. Turn down your gas block more (since you have an adjustable gas block) or you can up the buffer weight. Turn off gas then open it up until you have enough gas to lock bolt to the rear on the last round, then open up the gas by like 1 or 2 clicks more. Stick with standard strength buffer spring since you're not using lightweight buffers and bolt carrier.
Link Posted: 2/21/2016 12:58:31 AM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Evintos:
Brass ejecting to the 2 o'clock? That don't seem right to me. Should be ejecting to the 3:30 - 4 o'clock. Turn down your gas block more (since you have an adjustable gas block) or you can up the buffer weight. Turn off gas then open it up until you have enough gas to lock bolt to the rear on the last round, then open up the gas by like 1 or 2 clicks more. Stick with standard strength buffer spring since you're not using lightweight buffers and bolt carrier.
View Quote

Yeah. To be honest, it is a parts gun. I assembled it with left over parts except for the G2S  trigger.

I foresee lots of tinkering with this one till it runs well.
Link Posted: 2/21/2016 8:16:09 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Evintos:
Brass ejecting to the 2 o'clock? That don't seem right to me. Should be ejecting to the 3:30 - 4 o'clock. Turn down your gas block more (since you have an adjustable gas block) or you can up the buffer weight. Turn off gas then open it up until you have enough gas to lock bolt to the rear on the last round, then open up the gas by like 1 or 2 clicks more. Stick with standard strength buffer spring since you're not using lightweight buffers and bolt carrier.
View Quote


Some lightweight action guns eject a bit forward due to fast cycling and it is ok.
Link Posted: 2/21/2016 8:17:36 PM EDT
I bought a broken Geissele used once. The owner sent me a replacement disconnector and a goodie bag, knowing full well that I purchased a used trigger.



Give them a call.
Link Posted: 2/21/2016 10:23:11 PM EDT
Well,  Today was a good day.

I changed the recoil spring and played with three different buffer weights. (standard, H2 and a 9mm buffer) gun fired everything I fed it with one exception a round only chambered half way in. Not sure what that was about though.

I fired fast, slow, weak handed, not shouldered, one handed pistol style, just about every conceivable style i could to see if I could get the gun to malfunction.

Whatever it was, the gun works just as well with any buffer weight. The standard was noticeably more recoil and the 9mm buffer was the least, but the gun chugged along for about 80 rounds.

Thanks for all the suggestions. I appreciate it.
Link Posted: 2/21/2016 10:25:32 PM EDT


Weird.

I have never experienced a failure with mine, and this lower has seen near 100k shots fired, not including dry fire practice.

Link Posted: 2/21/2016 10:32:22 PM EDT
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Originally Posted By Recusance:
Well,  Today was a good day.

I changed the recoil spring and played with three different buffer weights. (standard, H2 and a 9mm buffer) gun fired everything I fed it with one exception a round only chambered half way in. Not sure what that was about though.

I fired fast, slow, weak handed, not shouldered, one handed pistol style, just about every conceivable style i could to see if I could get the gun to malfunction.

Whatever it was, the gun works just as well with any buffer weight. The standard was noticeably more recoil and the 9mm buffer was the least, but the gun chugged along for about 80 rounds.

Thanks for all the suggestions. I appreciate it.
View Quote


Did you take the trigger out and put it back in?
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