Colt M16/M4/AR15 Auto Sear Pin

(48 reviews)
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Factory Colt pin for automatic sear assembly.

Replacement parts, all NFA rules apply


  • 5

    Posted by Nick on 5th Apr 2024

    Appears to be well constructed haven't used it yet but look forward to it

  • 5
    Great replacement part

    Posted by Johnny cash on 17th Jun 2023

    Great price and good replacement part

  • 5
    Great quality, and excellent service!!!

    Posted by Jordan McFarlin on 31st May 2023

    These auto sear pins were perfectly made to spec, couldn’t be made any better.

  • 4
    Works well

    Posted by Happy customer on 24th Sep 2022

    As described good quality

  • 5
    Awesome M16 Parts

    Posted by AZ Joe on 25th Apr 2022

    Genuine Colt M16 parts, can't beat them, great price for all the M16 parts as well.

  • 5

    Posted by Rod Sinclair on 11th Mar 2022

    Works as advertised

  • 5
    Aggressive prices and fast shipping.

    Posted by J M on 8th Jan 2022

    AU always has some of the best pricing online and if not the fastest shipper who doesn't continue to blame COVID for delayed shipments.

  • 5

    Posted by MBHSR. on 12th Dec 2021


  • 5
    Quick and professional

    Posted by Garett Holmes on 27th Nov 2021

    Quick and professional