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2/10/2012 2:06:48 AM EDT
What should I look for when considering a trigger?  Is there a big difference with rounded or squared hammers?
2/10/2012 5:05:29 AM EDT
[#1]
I'll spare you my opinion as I'm sure plenty will chime in with theirs, but this is a good read:

http://www.ar15.com/forums/t_3_12/366464_Trigger_Fire_Control_Groups_tested_and_evaluated___the_and_34_BESTand_34__trigger_for_you___.html
2/10/2012 7:37:38 AM EDT
[#2]
Hammer weight, not so much shape, affects speed (lock time).
You will find it's more about clean sear engagement (and other elements) that translate to a good trigger.
Here's an animation....post #5.
The upper is S/A and the lower is F/A

Notice also the difference between the disconnecter and the sear.
AR Trigger Animation
2/10/2012 8:23:50 AM EDT
[#3]
I just went on youtube and slightly bent my hammer spring, sanded my sear engatement with 400 wet or dry sandpaper till it was smooth, put some moly lube on the engagement, and now I have a much easier to control trigger...

If you are looking for a good trigger, my jard non-adjustable 1.5lb trigger does me fine for plinking and target sooting.
2/10/2012 8:46:29 AM EDT
[#4]
One of my personal favorites is my Chip McCormick 3.5lb single stage, Very clean trigger, hardly any take up and creep is very minimal also. I chose that trigger for a close to mid-range setup and where I'd be shorting off hand or at best kneeling with knee to elbow type support because it's quick and clean. I have a 2 stage trigger on my 20" varmint gun so there's that anticipation of the sear break next which seems to put more rounds closer to where they should be.



In short you have to decide what the application will be, shooting style etc etc, and choose a trigger that fits your needs, once you decide and before you purchase come here again with the one your interested in and somebody will tell you all about it, good and bad.


 
2/10/2012 4:14:24 PM EDT
[#5]
Service life, trigger feel, effectiveness with different types of ammo, history, cost, etc.
By history I mean if you want a FCG for TEOTWAWKI you might want a FCG that has been combat proven.
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