Author Topic: Looking for longer ar15 pivot pins  (Read 1361 times)

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Offline timetofly

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Looking for longer ar15 pivot pins
« on: January 18, 2024, 07:02:44 PM »
I bought a carbon fiber lower receiver and while installing the lower kit, I discovered that I need a longer pivot pin.  I contacted the place where I bought it from, and they don’t carry the longer pivot pin, they sent me to a different site and I didn’t see pivot pins of any length there. 

At this point after many Google searches that yielded nothing, I’m reaching out here for advise. 

Thank you in advance for any help
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Offline E.Shell

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Re: Looking for longer ar15 pivot pins
« Reply #1 on: January 18, 2024, 08:34:20 PM »
Sorry not to be able to help find pins, but would point out that you may not need them.

EDIT: Very sorry, missed the 'pivot' part...serious brain fart...

Note the following:
1) The width of the internal cavity of the fire control pocket of the AR-15/M-16 family of rifle receivers is standardized. This means the pins will have the same engagement length whether aluminum or carbon fiber is used for the lower receiver material.
2) The trigger pin is retained by one of the legs of the hammer spring dropping into the groove closest to the end of the pin - pin is forced to remain centered and is not going anywhere.
3) The hammer pin is retained by the spring-clip embedded in the hammer engaging the center groove - pin is forced to remain centered and is not going anywhere.

The only issue caused by the thicker carbon fiber receiver walls vs standard length pins is that the pins don't flush up on the exterior, which is purely cosmetic and have no effect on function. Theoretically, the shorter pin engagement could wear sooner on the carbon fiber receiver, but would probably take a gazillion rounds to loosen up.


Good luck finding longer pins if you really feel they are needed, but I've never seen them.
« Last Edit: January 21, 2024, 08:29:54 AM by E.Shell »
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Offline timetofly

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Re: Looking for longer ar15 pivot pins
« Reply #2 on: January 20, 2024, 04:28:08 PM »
Unfortunately it was an ID ten T error on my part,  I’m embarrassed about this.  The only good thing is that I didn’t slander the manufacturer.
All of life’s journeys begin by putting one foot in front of the other.

Offline E.Shell

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Re: Looking for longer ar15 pivot pins
« Reply #3 on: January 21, 2024, 08:28:01 AM »
LOL, I know the feeling. I just realized I missed the 'pivot' part of your request and came back here to correct my post. My apologies...
The beatings will continue until morale improves.