Put in Timney 3lb trigger, few fail to fires

[Dixit]

Just got my M&P 15-22 MOE version and before even shooting it stock, I had a Timney 3lb trigger ordered and swapped that in as soon as I got it. I got the flat spacer plate from Timney along with the KNS anti-walk pins. So the trigger is tight and not going anywhere.

Took it to the range, and on a 25rd magazine, I get 1-2 fail to fires (end up just having to pull the charging handle, eject the round, then fire the next one), The indentation on the round looks light, I can put it back in and fire it and most of the time it fires. But looking at some fired rounds, I see almost the same depth of the indentation.

Ive tried Winchester 36grain, Remington 36grain, and Federal Champion 40 grain (I believe). Seem to have same issue.

So I cleaned the entire spring, firing pin, slide, etc, very lightly lubed it with CLP (as many state too much lube causes it to just get coated with the powder later. Took it back to the range, still same problem.

So Im trying to think the spring is just not powerful enough, I may just put the stock FCG back in and test it again to be sure. I have a Colt LE6920 so Im sure it wouldn't mind getting the Timney.

Anyone have these issues? Or is this just the nature of the beast with this Timney 3lb?

BTW new to this site and this rifle, looked around and only see a few thread on Timney fail to fires. But there was no resolution to it.

Dixit

 

[RedNeck Jim]

Anyone have these issues? Or is this just the nature of the beast with this Timney 3lb?

BTW new to this site and this rifle, looked around and only see a few thread on Timney fail to fires. But there was no resolution to it.

I had a thread on the Timney trigger & I had a resolution... I pulled out the Timney & replaced with a CMC. With the CMC, my light strikes went completely away and have stayed away for some 2000 rounds. Most ejection issues went away also.


From my thread:
Logically, I agree. However, with the stock trigger I had no light strikes and almost no FTE or stovepipes. With the Timney, besides the FTF issue I had a bunch of Stovepipes and FTE while using the CCI Choot Em ammo. Made me wonder if my gun didn't like that brand. However, when we switched over to the CMC, not only did the FTF go away, the stovepipes did also.

We were shocked & I just don't understand the correlation. Using the exact same box of Choot Em, we had no issues while using the CMC... or several other types of ammo. Why would stovepipes & FTE go away with nothing more than a trigger change? I did not clean the gun between using each trigger.

 

[Dixit]

Guess I may have to pull the Timney trigger out and move that over to my AR15 and then temporarily try the stock trigger just to make sure there is no other issues. If its good, I guess Im coughing up some dough for the CMC ones. I waffled on getting the CMC or the Timney and in the end picked the Timney cause it got overall good reviews but didn't see any specific ones of it being used on the M&P 15-22s.

Dixit

 

[Dixit]

Just wanted to update the thread by saying I put the stock FCG back in and went to the range today and shot 100rds, and not one fail to fire due to light strikes. No issues. So for now not putting the Timney back in, nded up just moving that into my Colt LE6920 which Im sure wont have any problem with fail to fires on the centerfire based ammo.

I may end up trying this CMC trigger since Redneck Jim mentioned he has had success with it.

Dixit

 

[Lorelei]

I was having the same problem with a Jard trigger and started a thread in here asking for ideas. A couple people are convinced I have the hammer spring in backwards when I know better. When I talked to the people at Jard they said it sounds like the hammer spring may be defective. Is it possible you have the same reason?

 

[stavman11]

Ya I had had some issues with my Timmney in the past... but once S&W repaired my busted firing pin and also replaced the ejector..... I dont have any issues any more


Is Kinda weird...

I would also look at where the Pin is impacting the primer.... then try and adjust the trigger by removing the top set screws, loosening the lower ones, then lightly tighten one, then the other, and back and forth to try and get em even as possible...

Just a thought i had so figured maybe it could help....

Also be sure you use blue locktight on the set screws so they dont back out... so also check that the screws are tight...

Not sure what else ta say..... Good luck... I also had my Timney in my AR Sport... LOVED it.... so maybe get a CMC and put the timney in yer AR,...... youll like it



Stav

 

[Dixit]

Well this was a brand new Timney, and the hammer when released it really strong, so didn't think the spring was bad. It has a good bit of force coming up and hitting my hand (since Im blocking it from hitting the polymer stop).

Stav, what you mean by adjusting the screws? I think you mean the set screws on the Timney, but don't think that is going to do anything. Because all it does it keep the trigger holding pins from coming out. I had the KNS pins in there, so technically didn't need to use the Timney set screws. I talked to Timney and they sent me that small flat plate to put underneath but it was slightly too thick causing the pin not to slide into the original holes and the Timney. So ones I sanded the plate they sent down a bit, it fit, but it didn't change anything.

Don't think my firing pin or extractor is messed up since putting the stock one back in made it fire continuously without issues. Ive cleaned the bolt/firing pin group fairly often after shooting.

Dixit

 

[gdnagle]

Just wanted to update the thread by saying I put the stock FCG back in and went to the range today and shot 100rds, and not one fail to fire due to light strikes. No issues. So for now not putting the Timney back in, nded up just moving that into my Colt LE6920 which Im sure wont have any problem with fail to fires on the centerfire based ammo.

I may end up trying this CMC trigger since Redneck Jim mentioned he has had success with it.

Dixit

Lesson's learned always shoot stock first to make sure there is not a problem with the firearm before making modifications. I don't think it is a big disaster to wait until after a couple hundred rounds before making changes. Then you know it's not the manufacturing problem.

 

[stavman11]

Look at when you tighten the set screws.... the Trigger group will Move
The 1st ones hit the steel plate they gave you and FIRM up the group.... the second set of set screws keep the 1st ones from backing out.. i also use the KNS Pins.... but the set screws do DO something, maybe not much, but worth checking

before i got the KNS pins , even after tightening the set screws, my Trigger Pins would walk out....

Anyways just a thought

 

[Dixit]

Look at when you tighten the set screws.... the Trigger group will Move
The 1st ones hit the steel plate they gave you and FIRM up the group.... the second set of set screws keep the 1st ones from backing out.. i also use the KNS Pins.... but the set screws do DO something, maybe not much, but worth checking

before i got the KNS pins , even after tightening the set screws, my Trigger Pins would walk out....

Anyways just a thought

Right I follow you there. Before I got the steel plate, the Timney FCG would rock a little side to side when the hammer was cocked, even with the KNS pins. Once I got the steel plate and sanded it down a tad so I could put the KNS pins back in, I gently tightened the first set screws so it wouldn't rock anymore and firmed up the entire FCG. Then put the 2nd set in there to keep the 1st set from backing out. Timney felt nice and firm now, no rocking or anything. Went to test fire about 200rds through it, and still ended up with light strikes. Looking at some of the light strikes (wish I kept some of the shell casings) some were barely hit. But then I remember comparing it to fired ones and from the naked eye, they both looked like they were hit approximately same amount and depth. So was hard to fully understand why one would fire, and other wouldn't. But for now the stock is back in and working. Will shoot about 500rds through it to make sure its good. Then will either retry the Timney (although may not since its happy in my AR15 now) or get the CMC trigger to see how that works.

Dixit

 

[yugowego]

put a Geissele fcg in it and call it a day