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Does the 3-position FA Variant share compatibility with binary triggers with 3-position selectors like Franklin Armory or Fos-Tech Echo?? — 4 Answers

by Bill S, from MN, United States Asked on November 25, 2018

Name Battle Arms Development Combat Ambi Firearm Safety Selector (5)
Currently Unavailable View Product
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Answered by Ethan C., Gear Expert, from IL, United States, on September 20, 2019

Yes, it should be compatible with 3-position binary triggers.

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Answered by Aggieman12, member, from TX, United States, on October 16, 2019

Absolutely NOT. I’ve installed an Echo and can tell you the internals are completely different; a standard selector (of any kind) won’t even slot in.

If you’re concerned about the unappealing aesthetics of the levers that come with the binary trigger, I can tell you that with a little bit of filing you can use replacement levers from Battle Arms or Radical Firearms, perhaps others. The main issue you will probably run into is the thread pitch of the screw and its length. Hint: they’re not the same. You’ll need calipers to gauge it just right in comparison to the original screw, also taking into account the difference in thickness of the recess (countersink) of the lever itself.

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Answered by PAJOHN, member, from PA, United States, on October 03, 2019

No, no, no. Binary trigger kits contain their own 3 position selector switch (safe,semi, binary). Using other parts not included in the kit may create an unsafe firearm.

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Answered by reviewfive, member, from NY, United States, on September 30, 2019

No, it will not work with the echo

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