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Posted: 3/9/2022 4:18:57 PM EDT
some accounts state that you can use  ar triggers in the acr.  Just need to use the acr hammer spring or bend a ar one to fit.   True?  I'd love to drop in a flat faced if possible
Link Posted: 3/9/2022 7:12:40 PM EDT
[#1]
Think you need a trigger jig specific to the ACR to hold the AR trigger & hammer.  Maybe able to 3-D print.
Link Posted: 3/9/2022 10:09:22 PM EDT
[#2]
Use the factory hammer spring with any trigger you want. I have a RR National Match trigger in my ACR.
Link Posted: 3/10/2022 12:46:11 AM EDT
[#3]
Been running a RRA Match trigger in mine since 2008.
Link Posted: 3/10/2022 6:28:39 PM EDT
[#4]
I've had an SSA in mine since 2013. Just use the ACR hammer spring.
Link Posted: 3/10/2022 6:52:13 PM EDT
[#5]
I also use an RRA Match trigger in my coyote ACR.

I ended up bending the RRA spring to match the dogleg in the factory one.  Not hard.

Now, putting the entire thing back together was an exercise in frustration.  
Link Posted: 3/10/2022 8:33:06 PM EDT
[#6]
Do you think something like a Geissele National Match trigger would also work in the ACR?
Link Posted: 3/10/2022 8:51:47 PM EDT
[#7]
I have a Geissele SD-E in my acr. Trigger swap is pretty easy.
Link Posted: 7/1/2022 8:58:19 AM EDT
[#8]
why does Geissele make a specific ACR trigger that has to re-use the factory hammer spring if other versions work?  What's different about their ACR trigger than other Geissele options?
Link Posted: 7/2/2022 2:11:17 AM EDT
[#9]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PGT_0673:
why does Geissele make a specific ACR trigger that has to re-use the factory hammer spring if other versions work?  What's different about their ACR trigger than other Geissele options?
View Quote

Marketing. Reuse the OEM hammer spring and any non-drop-in AR trigger will fit.
Link Posted: 7/2/2022 8:24:03 AM EDT
[#10]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Lerch641:

Marketing. Reuse the OEM hammer spring and any non-drop-in AR trigger will fit.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Lerch641:
Originally Posted By PGT_0673:
why does Geissele make a specific ACR trigger that has to re-use the factory hammer spring if other versions work?  What's different about their ACR trigger than other Geissele options?

Marketing. Reuse the OEM hammer spring and any non-drop-in AR trigger will fit.

* Almost any.  The Larue MBT is too tall on the tail of the trigger.
Link Posted: 7/3/2022 7:44:58 AM EDT
[#11]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By PGT_0673:
why does Geissele make a specific ACR trigger that has to re-use the factory hammer spring if other versions work?  What's different about their ACR trigger than other Geissele options?
View Quote


It's the same as their AR trigger, they just don't include a hammer spring and tell you to re-use the original one.

When they say "most AR triggers" they mostly mean you can't use the ones that come in their own little drop in box.
Link Posted: 7/19/2022 12:38:58 PM EDT
[#12]
I think early ACRs were not fully compatible with AR15 triggers.
My understanding is that Freedom Group fixed that.
Link Posted: 7/19/2022 1:54:14 PM EDT
[#13]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By jough43:
I think early ACRs were not fully compatible with AR15 triggers.
My understanding is that Freedom Group fixed that.
View Quote


All ACRs are ar15 trigger compatible. The only difference is the bend in the hammer spring leg. Even the Masada, in prototype form, which predates the ACR used an AR trigger.
Link Posted: 7/24/2022 12:44:59 AM EDT
[#14]
Sd3g and some random gi here for years now.
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