Ar 15 Drop In Auto Sear

The trip pin can be made from drill rod stock. Although I find a roll pin works as well without the need for a precision fit in the sear housing.

Whichever is used, make sure the trip rocks freely on the pin when it's assembled.

roll pin

test fire

Test fire as outlined at the end of CHAPTER ONE.

Drop Auto Sear

ar-15 with drop-in auto-sear

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Responses

  • Virpi
    How to build ar15 drop in sear?
    5 years ago
  • steven
    How the ar15 drop in auto sear was made?
    5 years ago
  • johan
    How to build an ar15 auto sear?
    1 year ago

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