Colt M16/M4/AR15 Auto Sear Pin

(45 reviews)
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Colt M16/M4/AR15 Auto Sear Pin


Factory Colt pin for automatic sear assembly.

Replacement parts, all NFA rules apply


  • 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

  • 5

    Posted by S Crawford on 19th Mar 2021

    Everything about my experience with Arms Unlimited was perfect!! Product was better than I could've imagined. I give them an A+++++++

  • 5
    Colt parts

    Posted by Paul Hurley on 8th Mar 2021

    As usual Arms Unlimited delivers! Fast shipping and all the colt parts you need!

  • 5
    Great Pricing and Availability

    Posted by Reuben Oaks on 26th Dec 2020

    Wish I could actually use it, maybe the laws will change one day.