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Discussion in 'Gunsmithing Forum' started by J-Dee, Nov 12, 2011.
My newly bought AR-15 (Surplus lower) trigger pin is walking out!!! Help
You could try a new one from someplace like Brownells to see if it fits better, or you could get the KNS Precision pin kit that has screws on the ends to keep them from backing out unless you're trying to take them out. The KNS option is obviously more spendy.
Here's a link to an example of what I'm talking about:
ARR-371 - AR-15 Nonrotating Trigger Group Pins KNS Precision Generation 2 Model 2 Stainless Steel .154" Diameter
Pin drift is a fairly common issue. Solutions run from simply replacing the pin to threaded and capped "anti-drift" hammer and trigger pin sets ($$$).
Anti-Walk Hammer & Trigger Pins AR-15 Small Pin .154 Matte Package of 2
AR-15 Antiwalk Trigger Pins
Try turning over your hammer spring(that's what my problem was)
Thank you guys for all the info I have to check it out and keep u guys update ^^ hope to fix it soon
In addition to the good ideas above you could chuck the pin a drill (a lathe is better, if you have access to one) and using a small file make the recess a little deeper and the edges more square to keep the hammer spring legs in place. It won't take much and the pin will still be plenty strong enough for the task at hand.