Does anyone here know how to fix this? I put an adjustable Jard trigger in my 15-22 and now am getting light primer strikes. Several rounds per magazine don't fire.

Clean the firing pin channel and bolt face to see if that helps. I've got a jard and that helped when I got light strikes. Unfortunately you can't easily use a standard ar hammer spring, but jard does sell a heavy hammer spring that might help.

Are you using the springs that came with the Jard? The supplied spring and hammer are designed to work as a team and should give reliable operation. I've had mine installed for well over a year and have had no problems.

I agree that you need to check the firing pin channel. It should be clean with NO wet lubrication. If you must lubricate it, use DRY graphite.

Also be sure the hammer is not Mis-aligned.

I'm using the supplied hammer and trigger springs and completely cleaned the channer when I installed it last night. I'll check the alignment again but it seemed correct.

You probably need to put a VERY SMALL drop of CLP on the hammer pin to lube that bearing surface. Or use some dry graphite.

I tried that and no success. I swapped out my uppers to be sure the problem is in the trigger. Then I fired one round from my lower with the stock trigger and one round from the lower with the Jard. It took 2 tries to fire and I took this pic of the cases. I used the same upper both times.

The indentations look fine to me but obviously something is amiss. What ammo is that, BTW? I don't recognize the head stamp.

Does that look about right? Or are the Jard hits backwards? It's kind of hard to tell from the lighting. Both of the Jard hits look a little weaker than the factory.

I don't want to sound insulting (just trying to run down possibilities) but make sure the legs of the hammer spring are resting ON TOP of the trigger pin and are not underneath it.

Those are Aguila Super Colubri. I've gotten the same results with 2 other ammos.

Yes the springs are correctly on top of the trigger pin. I double checked that too because I had a problem with that on another gun previously.

Both of the Jard hits are definitely weaker. I'm sorry the picture is bad I don't do cameras any justice. You have them labelled correctly.

OK, the Jard hits definitely look lighter. For a few more dollars you could try the heavy hammer spring: AR Replacment Parts

Thank you for that link I just ordered one. I'm still going to try to figure this one out since it's supposed to work with this hammer spring.

I encountered the same issues when I installed an ALG ACT trigger group in my 15-22.

I installed it originally with the stock S&W hammer spring, on top of a fairly dirty bolt. The result was around 10% lite strikes.

I switched back to the hammer spring ALG supplied with the trigger, which is a stronger spring than the stock S&W, and cleaned the bolt up.

The result seems to be working fine at this point in time.

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Uva Uvam Vivendo Varia Fit

I'm out of ideas. My Jard has been flawless in over 8,000 rounds.

My Jard Also Works Flawlessly. It's Even Breaking At < 3# Now!

Thank you for trying. If the heavy hammer spring doesn't fix it I'm going to get rid of it.

have you Contacted the manuf about it


Might try that

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--Stav--

Personally, I think you've done something wrong in the installation.

I would look for a damaged spring/ improper install of the spring/ first thing. Weigh your parts ? The new MIM stock parts are lighter and stronger.

I thought it would be a good idea to bring this thread back up to the top. I've been having some light strike issues with my 15-22 and an ALG trigger group, after I had taken apart and cleaned the parts.

Turns out my light strike issues were coming from my mistakenly installing the hammer spring backward while I was in a hurry.

I borrowed this photo from a guy over at AR15.com. It's about the best photo illustration I've run across.

__________________
Uva Uvam Vivendo Varia Fit

Yup, that will cause problems.

Is it possible to put the spring on backwards with a Jard trigger group and which one do you have?

I'm sorry but Aguila Super Colibri is not designed to be shot out of semi auto rifles of any type. It is a 20g bullet with no powder in the case. It fires from the energy of the primer only. It won't cycle a semi. Actually designed for bolt action guns and some pistols. Only has a velocity of something like 375 FPS. The ultimate quiet ammo. You would have to load each round manually, meaning pulling the charging handle on each round.

I did cycle the action manually. I used that ammo because I was shooting in the evening and didn't want to disturb the neighbors. I've tried the trigger with several different kinds of ammo and had the same results.

No I didn't. I took it out. Good idea though. Thank you

That was my thought but I can't find the problem. I took it out and put a different trigger in but can't duplicate any mistake. The trigger I have in now is working great except that the pull is heavier.

I checked that previously and hadn't made that mistake. It was a good thought though. Thank you

I think it might have been possible but it wouldn't have fired at all. The one I had was the 1 1/2 #.

Yes, it's possible to put springs backwards on all AR-style FCGs.

It's why you have to pay attention to what you are doing when switching them.

Check the photo Dirt Dart posted. Which way do you have the hammer spring installed? I'm betting it's backwards.

Yes, it will fire with the spring backwards ... doing exactly what you describe.

It wasn't. I check and rechecked. I even took the trigger completely out and reinstalled it a couple times. Trust me when I say that I had the hammer spring in the correct way.

look at it the simple way. The hammer spring doesn't exert enough force to dent the dam thing properly. Simple isn't it. U can bend the spring slightly to raise the force of the hammer. That will fix it and U can get a good spring for it later.

Then I have no clue what is going on with your installation. As I have stated previously, it has all the symptoms of an incorrect installation, but since you state that's not the case, I give up.

Did you ever receive the heavy Jard spring?

You had already said that and I had already thanked you for trying. The hammer spring was put in right the first time and every time. I made contact with Jard today and the person I talked to suspects the hammer spring may be defective. That could cause the problem.

Yes but I hadn't tried it yet. I had taken the Jard out before it got here and have not put it back in yet. I might be sending the whole thing in to Jard.

I sent the trigger to Jard and have been told the hammer spring is out of spec and will be replaced. This should fix the problem.

Overthinking a simple solution, yes? Muxh to talk about, yes ?

Does it bother you that I posted what the issue turned out to be?

Since U solved UR problem all is good with U.

Then what was your last post trying to say? Looks to me like you didn't approved of me posting here looking for the answer before I sent it off to Jard.