patrickm1587
Member
Is the hammer spring on a 15-22 the same as one on a real AR-15?
15-22 Hammer spring
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chuck s
Member
The M&P15-22 hammer and trigger (and their pins and springs) are straight out of the M&P15-not22. Or any other AR15 fire control parts set.
Whatcha thinking about doing?
-- Chuck
Whatcha thinking about doing?
-- Chuck
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patrickm1587
Member
Okay, that's what I needed to know. I did the 15 minute trigger job (see link at the end) and went and put about 75 rounds through my gun and there was about 6 times that the hammer just didn't strike hard enough. I should have only done the trigger spring instead of doing the trigger and hammer springs. I bent the hammer spring around a little bit and it seems to strike a little bit harder, I might just try it tomorrow and see if it works better. The trigger pull does feel a lotttt better though. 15 Minute Practical Trigger Job for the AR-15
chuck s
Member
Pat --
I did the same "15 minute trigger job" but only have a couple of test fires on it. If there's an issue with next weekend's shooting we can probably get together on solutions.
I'd rather not spend $100 on another good trigger if this trigger job is all that's necessary. I've fired the Rock River (or ArmaLite, I forget which) two-stage trigger in this rifle with no problems at all. Drops right in.
I need to visit the next gunshow anyway as I need a washer for the compensator for my newly threaded barrel.
-- Chuck
I did the same "15 minute trigger job" but only have a couple of test fires on it. If there's an issue with next weekend's shooting we can probably get together on solutions.
I'd rather not spend $100 on another good trigger if this trigger job is all that's necessary. I've fired the Rock River (or ArmaLite, I forget which) two-stage trigger in this rifle with no problems at all. Drops right in.
I need to visit the next gunshow anyway as I need a washer for the compensator for my newly threaded barrel.
-- Chuck
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patrickm1587
Member
Well I modified the hammer spring a little bit last night and then put 75 rounds through it about 30 minutes ago with 0 problems. You know how on the instructions of the 15 min. trigger job it says to clip off the right leg of the hammer spring? Well after I clipped that and bent the trigger spring is when I had the problem with it not striking hard enough. All I did to fix the problem was bend the left leg of the hammer spring around some more and now it strikes good. The trigger feel is 10 times better than how it was stock. Here's a half ass drawing of what I did to fix the problem:
The one on the left is kind of how it looked stock, the one on the right is how it looked after I modified it. Bending the left leg on around made it hit a good bit harder. Now this is how the spring would look installed looking at it from the left side of the gun, the side where the safety switch is.
The one on the left is kind of how it looked stock, the one on the right is how it looked after I modified it. Bending the left leg on around made it hit a good bit harder. Now this is how the spring would look installed looking at it from the left side of the gun, the side where the safety switch is.
vitamind3
Member
The reason it had failed to fire was because you clipped offtoo much of the spring. You may wNtto grab a couple more springs, 1 to try again, and the other in case you mess THAT one up!
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patrickm1587
Member
The reason it had failed to fire was because you clipped offtoo much of the spring. You may wNtto grab a couple more springs, 1 to try again, and the other in case you mess THAT one up!
I don't think I cut it to short. I didn't even cut it down to 1/4". And what is wntto? I got it fixed now so I don't need to replace the spring.
vitamind3
Member
well.. theres only one way that it wouldnt be strong enough to fire the round. not enough spring strength. it comes out of the factory with two legs, and strong enough to fire the round. if you cut one side, and it doesnt fire anymore, it means too much has been cut.
Give this a read http://smith-wessonforum.com/smith-wesson-long-guns/113998-now-im-not-saying-i-deserve-award.html
the main reason I say you should grab another spring is because after clipping and bending, you may have a weak-point in the spring, leading to failure. Its worth the $1.50 to have the piece of mind, knowing that if it breaks, you can swap it out, and not waste a day at the range.
"wNtto" = 'want to' in fat-fingers on an iPhone speak.
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patrickm1587
Member
Ok I just noticed something. I cut the opposite leg off that you did. Would that make any difference? But on the website I looked at for the trigger job, it said to cut the right leg off, and that's the one that I cut off. But still, I didn't take off as much of the leg that you did. But in the pictures on this website 15 Minute Practical Trigger Job for the AR-15 it shows it being the right leg if you were looking from the back of the gun.
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patrickm1587
Member
Which one would I buy for the 15-22?
I need some suggestions. I have on order JP Reduced Power FCG Springs JP Reduced Power FCG Springs [JP Reduced] - $9.95 : Spikes Tactical for a 15-22. Should I keep the stock hammer spring and just try the JP trigger spring? Or use both JP springs? I’m trying to go the cheap route. Any help appreciated.
Sorry I’m answering my own question but maybe it can help someone. I emailed JP with the same question and here is their very promt reply.
“I would use the stock, full power hammer spring and the light JP trigger spring. Rimfire is ignition-sensitive enough as it is. Reducing the hammer spring tension only exacerbates the issue.”
I will post the result with the new spring after I install it.
“I would use the stock, full power hammer spring and the light JP trigger spring. Rimfire is ignition-sensitive enough as it is. Reducing the hammer spring tension only exacerbates the issue.”
I will post the result with the new spring after I install it.
chuck s
Member
I clipped the right leg on my hammer spring but 10°F weather has kept me from the range since only firing a few test shots (cases) to determine if the strike is powerful enough.
You need to cut the leg down to 1/4" so the stub doesn't interfere with the trigger. An alternate to cutting the spring leg is to assemble the hammer spring with one leg on top of the trigger pin and the other below it. A bit of cursing usually helps wiggling this into the rifle.
There are "reduced power hammer springs" marketed too. JP with yellow paint as I recall.
-- Chuck
You need to cut the leg down to 1/4" so the stub doesn't interfere with the trigger. An alternate to cutting the spring leg is to assemble the hammer spring with one leg on top of the trigger pin and the other below it. A bit of cursing usually helps wiggling this into the rifle.
There are "reduced power hammer springs" marketed too. JP with yellow paint as I recall.
-- Chuck
mikehoncho
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why can't the hammer spring legs be bent a few degrees versus cutting the right leg? i bent mine about 10-15 degrees and so far it has worked just fine. now i'm not working with one leg of a spring. much easier to reassemble too.
FWIW, i bought 2 extra springs in case it didn't work. i left the OE springs alone.
FWIW, i bought 2 extra springs in case it didn't work. i left the OE springs alone.
vitamind3
Member
I dont see any reason not to try it that way. youve got extra springs just in case. i say youre good to go!
mikehoncho
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thanks vitamind3. i've already done it and it works good for me.
i was posing the question of why not bend the springs versus cutting one leg. can anyone think of a reason why cutting would be superior? the only thing i can think of is by bending the legs, you don't know how much reduction in hammer force you will get but the same holds true for cutting one leg. at least with bending the spring, you don't have all of the spring force coming from one side thereby changing the force vector, although i don't know that that would matter.
to me, if the springs were meant to be cut, there would be one legged aftermarket springs available versus reduced power two legged springs. does that make sense?
i think the best way to answer this question is to buy a second 15-22 and cut the spring. fire it about 10,000 times and compare to a bent spring after 10,000 rounds. anyone want to chip in for the gun and ammo? i'll do all the work
