AR-15 trigger pin walking out
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Old 11-12-2011, 09:49 AM   #1
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Default AR-15 trigger pin walking out

My newly bought AR-15 (Surplus lower) trigger pin is walking out!!! Help

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Old 11-12-2011, 11:38 AM   #2
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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

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Old 11-12-2011, 11:43 AM   #3
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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

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Old 11-12-2011, 01:05 PM   #4
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Quote:
Originally Posted by J-Dee
My newly bought AR-15 (Surplus lower) trigger pin is walking out!!! Help
Try turning over your hammer spring(that's what my problem was)
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Old 11-12-2011, 06:59 PM   #5
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Thank you guys for all the info I have to check it out and keep u guys update ^^ hope to fix it soon

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Old 11-13-2011, 03:10 PM   #6
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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.

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