123

[Ishootforblood]

123

[SkyHawk]

Be sure the hammer spring is installed correctly. If it is, the trigger pin should not walk out.

[saki302]

If you have access to a lathe, you can deepen the outer retaining cut on the trigger pin.

Or worst case, go to a set of anti rotation pins. Are you rinning an 80% lower (looks like a machined pocket to me). I favor AR pins in those especially if the pocket and holes are not anodized.

[kcstott]

If you have access to a lathe, you can deepen the outer retaining cut on the trigger pin.

Or worst case, go to a set of anti rotation pins. Are you rinning an 80% lower (looks like a machined pocket to me). I favor AR pins in those especially if the pocket and holes are not anodized.

Here we go again with the myth that the pins rotate enough to cause wear on the holes. that wear only occurs after many thousands of rounds of use, the average shooter will not see it.

[liber]

I recently replaced milspec LPK triggers in 2 ARs with the Velocity 3 lb. models, I bought them from WC Armory in Texas ($135/ea). They included stainless anti-walk pins with it, I thought that was a nice touch.

I've never had an issue with the pins walking out though. My holes are raw alu, and haven't seemed to widen on me, so I think that is a myth.

[ar15barrels]

If you have access to a lathe, you can deepen the outer retaining cut on the trigger pin.

I might be wrong, but I suspect that the hammer spring needs to be a bit firmer to hold the trigger pin in place, or the trigger pin needs a bit deeper groove for the hammer spring-arm to rest in.

Sometimes, it is the trigger that is the problem.
There needs to be enough of a notch on the SIDE of the trigger for the spring leg to engage the groove in the trigger pin.
If the notch is not deep enough to let the spring actually set into the trigger pin, then the pin can just walk out.
This is an easy thing to check with the parts out of the lower.

You can plainly see the notch on the side of the trigger in this picture:



It's a 2 minute fix with a hand grinder to increase the clearance on the side of the trigger if that's the issue.

[AGunNut2]

Sometimes, it is the trigger that is the problem.
There needs to be enough of a notch on the SIDE of the trigger for the spring leg to engage the groove in the trigger pin.
If the notch is not deep enough to let the spring actually set into the trigger pin, then the pin can just walk out.
This is an easy thing to check with the parts out of the lower.

You can plainly see the notch on the side of the trigger in this picture:



It's a 2 minute fix with a hand grinder to increase the clearance on the side of the trigger if that's the issue.

Excellent tidbit. Learn something every day. Poor man's lathe is a drill press or even a drill for the purpose of the notch on the pin.

[saki302]

Buy a Dillon 650 with a .223 setup.

Your rifles WILL see that much use within 1-2 years, easy

But in this case- it would fix the OP's problem instantly. Some of the new trigger systems do require them too.

-Dave

Here we go again with the myth that the pins rotate enough to cause wear on the holes. that wear only occurs after many thousands of rounds of use, the average shooter will not see it.