RedNeck Jim
Member
They are oversized & fit mine perfectly.
My trigger is acting up...
- Thread starter R4MBLIN WRECK
- Start date
They are oversized & fit mine perfectly.
OP
R4MBLIN WRECK
Member
Oh okay, then I guess mine isn't broken since nothing has fallen out of the lower receiver. It must be getting week though.
Gopher Slayer
Member
With the hammer forward, try pushing the pin out. If it moves with little to no pressure the J-spring is toast.
I'm talking length, not diameter.
Can you tighten the screw heads all the way down without them bottoming out on the sides of the receiver?
RedNeck Jim
Member
Yep. I have looked for the specs but see nothing on their length. You know the specs for either?
Gopher Slayer
Member
I don't.
It's good to know they fit properly on both receiver sizes though. They must have plenty of slack side to side on an AR15 receiver.
OP
R4MBLIN WRECK
Member
Well I did what you said and the pin moved out of place, but I wouldn't say that it moved with little to no pressure.
photoracer
Member
Yes they do have issues. That is why they make oversize pins at .1555 in addition to normal .154. It is the rotating of the high grade steel pins in a polymer or alloy holes that creates the wear. Not going to happen right away of course but if they keep popping out of the side holes that will increase wear in polymer for sure. I have them in both my 15-22s and my ARs. Some drop in trigger makers actually include them in the installation kit. I also have a set of the JPs with the clips. They work good in keeping the pins in place but do nothing for the wear issues.The JP pins hold everything in place, just like the KNS. Someone will have to document where any AR type gun has had issues with a pin rotating. Think about how many pins are in an AR.
I think some of you guys just like having more stuff hanging off your rifle.
DoItRtOrNtAll
Member
Hey guys, seems to me I'm having a similar problem. Seeing as this is my first rifle, I'm new to guns. I was out at the range yesterday and this is whats happening to me, I fire one round and the trigger doesn't reset, if I push the trigger forward with my finger, I hear a click, and the rifle can be fired again. Being that I am a service tech, I am mechanically savvy. I removed my lower and have disassembled my FCG and I don't see anything that is obviously broken, the pins holding the FCG in did not walk, and were even when I removed them, so am I looking at a broken "J spring" inside the hammer? I don't know how I would check it, or remove it. It looks intact but could be broken somewhere inside the hammer not visible unless taken out.
yugowego
Member
With the hammer out of the lower, put the hammer pin in the hammer and see if it "locks" into the J spring. It will be hard to push or pull the pin out of the hammer if it is locking with the J spring properly.
Gopher Slayer
Member
Look inside the hole of the hammer. If you can see a little piece of metal sticking out then it's not broken. Or just try pushing the pin through the hammer while not in place. If it doesn't catch, then the spring is weak or broken.
Not my pic, but it shows what I'm talking about.
DoItRtOrNtAll
Member
Okay, so I can see the spring in the hole of the hammer. And when I push the pin in, it does take some pressure along with removing it.
I did note that while fully assembled, the disconnector would catch on the lip of the hammer, and when I pushed the trigger forward, it would slip off and the hammer, which would then rotate forward and would be cocked normally
I did note that while fully assembled, the disconnector would catch on the lip of the hammer, and when I pushed the trigger forward, it would slip off and the hammer, which would then rotate forward and would be cocked normally
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yugowego
Member
PortRoyalDad
Member
Certainly sounds like a defective J-Spring
I had the exact same symptoms you have been describing throughout your posts.
I noticed that my hammer's pivot pin merely took only a small amount of pressure from my index finger to press in and out; however (as a comparison), in order to remove the hammer pivot pin in my AR-15 required pressure from a center punch and a light tap from a rubber mallet.
It turned out that the J-Spring inside my 15-22's hammer was lose enough to not properly hold in place the hammer's pivot pin. The center groove on the pivot pin is captured by the J-Spring, which is what's supposed to hold it in place, preventing the pin from walking out.
Anyway, since my rifle was new and covered under warranty, I had no issues at all sending it back to S&W for repairs…which they did without any trouble. Even though I was without the rifle for a short time, the repair didn't cost me a dime.
Best Regards, Mike
I had the exact same symptoms you have been describing throughout your posts.
I noticed that my hammer's pivot pin merely took only a small amount of pressure from my index finger to press in and out; however (as a comparison), in order to remove the hammer pivot pin in my AR-15 required pressure from a center punch and a light tap from a rubber mallet.
It turned out that the J-Spring inside my 15-22's hammer was lose enough to not properly hold in place the hammer's pivot pin. The center groove on the pivot pin is captured by the J-Spring, which is what's supposed to hold it in place, preventing the pin from walking out.
Anyway, since my rifle was new and covered under warranty, I had no issues at all sending it back to S&W for repairs…which they did without any trouble. Even though I was without the rifle for a short time, the repair didn't cost me a dime.
Best Regards, Mike
DoItRtOrNtAll
Member
Okay so after inspecting everything an pushing the pin in and feeling it lock, I decided to reassemble everything. Once I had it reassembled, I pushed the hammer back, so the disconnector locked on it, once I released the trigger it would slip off and the hammer would be ready to fire, after trying it several times, I could not reduplicate the issue. I'm going to try to get out this week and run another 50-100 rds to see if it acts up again, at which point if it does, I will contact S&W and send it in. I'm hoping there was just some crud keeping some tension on a spring or on the lip of ither the hammer or disconnector.
Thanks for all the help gentlemen. This forum is awesome!
Thanks for all the help gentlemen. This forum is awesome!
