Page 3 of 3 FirstFirst 123
Results 21 to 24 of 24

Thread: questions on KNS pins

  1. #21
    Join Date
    Mar 2010
    Location
    Southern Indiana
    Posts
    715
    Feedback Score
    1 (100%)
    Quote Originally Posted by markm View Post
    KNS pins are retarded nonsense. Just look at some of the other idiotic products this company makes.... crosshair front sight posts for example.

    If you have pins walking out, you have other problems.
    Sounds like some bullshit I would hear on TOS. And from a senior member non the less.
    Independent Field Testing/R & D

    Better to die for something than live for nothing

  2. #22
    Join Date
    May 2010
    Posts
    31
    Feedback Score
    3 (100%)
    I feel like a bit of an idjit for asking, but how does one measure the diameter of pin holes on a lower? I have a lower I think is out of spec and my non-scientific way of measuring was to use a 5/32 drill bit which went right through. 5/32" is 0.156, so unless I'm miserably misunderstanding tolerances, my lower's out of spec.

  3. #23
    Join Date
    Sep 2010
    Location
    OR
    Posts
    202
    Feedback Score
    0
    Unless you have machinist's measuring devices, you can't.

    The trigger-hammer group is designed to retain the pins with two springs; the small spring staked into the hammer detents the hammer pin and the hammer mainspring detents the trigger pin.

    If the small spring in the hammer is weak, or the detent groove in the pin is too shallow, the hammer pin will drift. If the hammer mainspring does not go into the detent groove on the trigger pin or the groove is too shallow the trigger pin will drift. If the spring in the hammer is doing its job, the hammer pin will generally rotate with the hammer.

    Dave

    Boonie Packer

  4. #24
    Join Date
    Aug 2008
    Posts
    1,663
    Feedback Score
    6 (100%)
    With captive trigger groups, KNS pins make sense because spring tension isn't present (at least with most captive systems) to keep the pins in place.

    I disagree with KNS pins for blowback/pistol caliber AR's because they don't let the user know immediately when a pin breaks (which could otherwise damage a system).

    For most purposes, KNS pins are simple window-dressing. (Yes, I sport them on several AR's and I do not apologize )
    Dave Merrill
    Terrible Technical Writer. Awful Photographer. Lazy Instructor. Kind of a dick.
    Loves Tacos.

Page 3 of 3 FirstFirst 123

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •