BCM® Taper Pins for Front Sight Base (Set of 2)

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BCM®'s USGI Taper Pins to secure the front sight base to the barrel on a M16 Rifle or M4 Carbine. These should only be installed by a qualified AR15 Armorer. These will not fit in holes drilled for straight pins. Holes must be reamed with a 2/0 reamer. (Do not over ream)
***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

36 Reviews

  • 5
    Front sight block pins

    Posted by Darren Bergeron on Jun 29th 2020

    I haven’t been to the range yet but the pins appear to fit like a glove.

  • 4
    Taper pins

    Posted by John Giglio on Jun 23rd 2020

    Good quality , perfect fit . Pretty straight forward.

  • 5
    Perfect fit

    Posted by Steven on Jun 18th 2020

    I was putting a non-BCM upper back together and lost the pins for the front sight gas block. This was the best price I could find a perfect fit.

  • 5
    Taper pins

    Posted by Gary Keily on Jun 15th 2020

    Exactly what I needed to fix my issue.

  • 5
    FSB-SET-2 Taper pins for front sight base

    Posted by Joe U on May 2nd 2020

    Awesome. Fit like a dream come trus

  • 5
    Taper Pins

    Posted by John on Apr 24th 2020

    Do exactly what you'd expect

  • 3
    Customer review

    Posted by Kyle Park on Aug 30th 2019

    Review body is empty

  • 5
    Try and find them

    Posted by Inspector71 on Jul 17th 2019

    Some competitors have the part but not the roll pins or pins but not the part

  • 5

    Posted by anonymous on Jul 17th 2019

    Did exactly what they’re intended for. My gas block is rock solid and these are the only pins I will use on any of my rifles.