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6/6/2026 10:10:13 PM EDT
The ambi FRS is on its way. Seems I recall someone stating that the rear of the trigger needs to be squared off but don’t see anything about this on Atrius product page. Will this trigger work?

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You think you're winning this game? You don't even know the God-damned rules. But don't worry, I'm gonna teach 'em to ya..
6/6/2026 10:29:40 PM EDT
[#1]
Not so much squared off, but the top of the trigger shoe tail should be trimmed until it's about 0.310" tall.

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6/7/2026 9:55:07 AM EDT
[Last Edit: HKH][Edited] [#2]
What he said

Normal height .330
I’m almost too low but it’s good.  If too low there is a distinct possibility it goes bang with the safety on.  Know that your trigger is now married to the Atrius.


6/7/2026 11:51:07 AM EDT
[Last Edit: SLYHUNTR][Edited] [#3]
The back end of the trigger bar needs to be a closed type not the slotted.  I checked all of my ARs and I only had one with the correct type of trigger bar, it was a PSA EPT trigger. It is also listed on the Atrius trigger compatibility  list.

Your first picture looks like the slotted type, I don’t think the FRS is going to work quite right with it.

I just tried mine out this morning and I’m rocking and rolling. I did have to get a H3 buffer to get it to run.
6/8/2026 11:12:14 AM EDT
[#4]
I mean the relief slot for the Disconnector is there obviously. How is that a problem with the Atrius?
You think you're winning this game? You don't even know the God-damned rules. But don't worry, I'm gonna teach 'em to ya..
6/9/2026 5:32:51 AM EDT
[#5]
The  tutorial I followed was kinda specific to the trigger bar I was using and indicated it needed to be closed. Another video I watched showed an open so it may not be required for all trigger bars. Sorry for the confusion.
6/9/2026 2:45:00 PM EDT
[#6]
Quote History
Originally Posted By SLYHUNTR:
The  tutorial I followed was kinda specific to the trigger bar I was using and indicated it needed to be closed. Another video I watched showed an open so it may not be required for all trigger bars. Sorry for the confusion.
View Quote


All good, I’ve seen that as well. From about a year ago. Just don’t see anything about it on Atrius site now.
I’ll give it a shot tomorrow and see what happens.
You think you're winning this game? You don't even know the God-damned rules. But don't worry, I'm gonna teach 'em to ya..
6/10/2026 11:35:54 PM EDT
[#7]
UPDATE:  Took the rear of trigger down to  .310 and installed. Passed all function test, no binding. Hit the range and it ran like a top, no malfunctions.

Thanks for the advise here.
You think you're winning this game? You don't even know the God-damned rules. But don't worry, I'm gonna teach 'em to ya..
6/11/2026 6:52:02 AM EDT
[#8]
Quote History
Originally Posted By alpha0815:
UPDATE:  Took the rear of trigger down to  .310 and installed. Passed all function test, no binding. Hit the range and it ran like a top, no malfunctions.

Thanks for the advise here.
View Quote

Great news!
It was not preached to the crowd,
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.

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