After stock trigger for AR

twig_40

twig_40

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Good day gentlemen,

I am in the process of building a tack driver and have been trying to cheap out by modding the stock trigger. That is not working out. I am looking for something with a nice crisp 3lb trigger any suggestions?

I did try the search function and nothing really relevant showed up.
 
twig_40 said:
Good day gentlemen,

I am in the process of building a tack driver and have been trying to cheap out by modding the stock trigger. That is not working out. I am looking for something with a nice crisp 3lb trigger any suggestions?

I did try the search function and nothing really relevant showed up.
Click to expand...


Timney, just buy and drop in. Not cheap, but anything good rarely is.
 
My vote goes to Geissele, they make some of their national match and the SSA trigger. They're built tough as nails too.

Changing out an AR15 trigger is one of the easiest triggers you can change out, so it's not like you really need a drop-in like the Timney.

ETA

Arms East is the importer for Geissele stuff!
 
I have a RRA 2-stage. From Questar. Very nice unit. Had to tweak it to get the pull above the 2kg NSCC limit.
 
twig_40 said:
What about the RRA nm trigger how's that one?
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depends how much you paid for it. When you buy it with the RRA LPK from Questars

https://shopquestar.com/shopping65/shopexd.asp?id=443&bc=no

Its essentially $100 . Add in a $12 JP "Yellow" spring kit and you ar GTG

http www.brownells.com/rifle-parts/trigg.../ar-15-reduced-power-spring-kit-prod7582.aspx

And you will be surprised on how nice a 2 stage you end up for a very reasonable cost

The RRA NM @ the regular going price of $150 you are now getting to the point where you may want to spend another $100 and get a Geissele SSA

This will make the Geissele fans crindge but, the RRA w/ JP Yellow holds it's own against SSA ( yes a have SSAs to compare with ). Where it doesn't compare is the finish on the Geissele is outstanding and I have never had issue with any Geissele . I have not personally had problem with RRA NM , but I have one person I know that experience the problem the RRA is know for ( becoming a single stage ! )

Since most people are only putting holes in paper with their AR, I would buy the RRA with JP yellow , unless you have money to burn then get a Geissele Hi Speed or SD3G. IMO the SSA-E pull can be achieved for less money using the RRA

Where the budget RRA cannot come close to is when you get into the Geissele Hi Speed with the "Match" springs installed , and the awesome Super Dynamic 3 Gun

Single Stage

If single stage is your thing by the Timney . I have one in 3# option and its great. Its reset is as short as the Geissle SD3G

The CMC is a good choice but same money as Timney....I perfer the Timney

Screwing with Std Trigger

As you notice yourself, doing home trigger jobs on std AR trigger will never get you anywhere near what any of the above mentioned trigger will give you .

It all boils down to trigger geometry ( honing sear surfaces, lighter hammer / trigger springs etc don't do crap for this )

Here is a standard trigger. Not the hammer / trigger surface location

TriggerMacro-10_zps22365589.jpg

TriggerMacro-11_zpsc040c567.jpg


In the machining process the tool marks run perpendicular to the sear surface direction of engagement. This is why you get the gritty feel

TriggerMacro-19_zps909c074a.jpg


You get people with time on their hands stoning and honing the surface to mirror polish ( actually hard to do without messing up the geometry ...this is why 1911 gunsmiths use a honing jig )

Problem with this is the location of the sear surface is not conducive for stupid light trigger pulls

Now compare the hammer / trigger engagement location with Geissle . Sorry, didn't photoshop a circle where to look, but its right above the trigger pin

Geissle_zps01521b65.jpg


Here is RRA NM

TriggerMacro-23_zps9b785c4c.jpg


Also notice location of the disconnector ...which is why these trigger have relatively short reset distance ....the pic below is misleading since it shows far more engagement of disconnector than there really is. Problem was the trigger would rotate off before I could take the picture !

TriggerMacro-8_zpsc26e40c8.jpg
 
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Note that the enhanced trigger mechanisms pictured above use a design concept developed by John Browning over a century ago.
 
You have to be more specific with ar triggers than a crisp three lb break. All kinds of options out there with all kinds of feels to them.
 
I'll let you know tomorrow if Brownells will ship the RRA 2 stage. I have one in my DPMS and like it a lot, gonna throw one in my Bushmaster if they will ship it. $120 there.
These guys (sponsor) have the Timney for $242... http://accurateaction.com/product/ar-15-competition/

Edit**
Brownells will ship, want the end user cert completed but thats it.....
 
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if your build is a DMR style i have a armalite 2 stage NM and i cant say anything bad about it. its is adjustable which i think some guys and gals dont like but it gives you options. i think final pull weight is 3-4 pounds. I put this in to my DMR build and have shot it about 5-6 hundred times with out any noticable change in trigger feel.
 
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