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11/26/2009 6:51:20 AM EDT
I've surfed around to find the easiest way to lighten the trigger pull on my ar.  Somewhere I read that you can't just drop in a lighter trigger spring without changing the hammer spring...why is this?  I've lightened a couple of my Ruger SA revolvers and found that it was a easy as putting a slight bend in the trigger spring and it has not effected reliability at all.  So can I simply swap out a lighter trigger spring without changing out anything else?

Sloth
11/26/2009 8:35:51 AM EDT
[#1]
Trigger pull is influenced by the trigger spring, which just returns it to the starting position; the hammer spring, which applies a lot of pressure to the trigger when the hammer is cocked, and the engagement between the two parts.  You can easily swap out both springs and notice a reduction in pull, but that's only part of the task.  You should also ensure that the interface between the two parts is as smooth as possible to reduce friction in the sear notch, which causes creep, grittiness and increased pull weight.

The simplest way to do this is to pull your hammer, trigger, disconnector and all associated pins and springs, and send them to Bill Springfield to tweak for you.  For $35 and a few days' wait, you can have an extremely smooth, 4 pound trigger.
11/26/2009 1:35:10 PM EDT
[#2]
Quoted:
Trigger pull is influenced by the trigger spring, which just returns it to the starting position; the hammer spring, which applies a lot of pressure to the trigger when the hammer is cocked, and the engagement between the two parts.  You can easily swap out both springs and notice a reduction in pull, but that's only part of the task.  You should also ensure that the interface between the two parts is as smooth as possible to reduce friction in the sear notch, which causes creep, grittiness and increased pull weight.

The simplest way to do this is to pull your hammer, trigger, disconnector and all associated pins and springs, and send them to Bill Springfield to tweak for you.  For $35 and a few days' wait, you can have an extremely smooth, 4 pound trigger.


This.
11/26/2009 4:28:16 PM EDT
[#3]
Or if you like to tinker(this is the "build it yourself" forum isn't it?), you can slick up your own trigger by polishing the engagment surfaces and changing the springs. More info here
11/27/2009 2:27:25 AM EDT
[#4]
Quoted:
Or if you like to tinker(this is the "build it yourself" forum isn't it?), you can slick up your own trigger by polishing the engagment surfaces and changing the springs. More info here


This on many levels works wonders and is almost free.
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