Sig P210A - Changing the Trigger Return Spring & Sear Adjustment

FYI...some instructions, should you have an interest in increasing or decreasing the trigger pull weight. Also some rough guidelines for adjusting sear engagement.

https://www.dropbox.com/s/x5oy76nzffp4ewl/Installing_Trigger_Return_Sear_Springs_P210A_Rev2.pdf?dl=0

I've completed a new (Revision 2) instruction guide for swapping out both the trigger return spring and the sear spring, on the Sig P210A (Target or Standard). Recall this "experiment" was aimed at increasing the trigger pull weight to 4# for EIC competition, without simply winding up the mainspring using the adjustable barrel nut. In my first iteration, I used a trigger return spring that was a bit to strong. This caused one to pull through the release with little to no sear "feel" when the sear adjustment pin was set for a ~4# pull weight. Since then I've experimented with a slightly lighter trigger return spring, in conjunction with a slightly heavier sear spring. To me this is much more desirable, as this combination produces a two-stage trigger with a distinct "wall" followed by a crisp release (similar to my Geissele HS match rifle trigger). The spring specifications are towards the end of the file, and I have some available (see instructions). Of course, one could also proceed in the reverse direction, and decrease the factory trigger pull weight (as well as change trigger feel and sear engagement), towards the 2.5# CF weight limit. It seems the factory triggers are in the 3 to 3.5# pull weight vicinity. I have not experimented with lighter springs, however, the necessary dimensions and specifications for the trigger return and sear springs can be garnered from the supplier website (noted in the instructions). Any questions or comments, feel free to message me. Here it is:

https://www.dropbox.com/s/x5oy76nzffp4ewl/installing_trigger_return_sear_springs_p210a_rev2.pdf?dl=0

I've been looking for data on this subject.  Great tutorial!  PM to you.

Excellent document!  I sent you a PM on the springs.   FYI Grainger has a huge selection of springs.   I'll take one of each of the ones you got to share your cost.

FYI - All spring sets have been sold. I'm not planning on ordering any in the future. Here is the information you need if you want to order them. The issue is that acxessspring has a $40 minimum order. 

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With the PC026-156..., 36 lbs./in spring, in conjunction with the PC019-109... sear spring, you can easily set up a 4# trigger that feels distinctly "two stage" with a crisp second stage release. It reminds me of a Geissele NM high-speed match rifle trigger. 


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tovaert...05/2022

I tried clicking on the dropbox.com links for Tovaert's instructions for trigger adjustments and both say the files have been deleted. Are they available somewhere else?

Orpanaut wrote:I tried clicking on the dropbox.com links for Tovaert's instructions for trigger adjustments and both say the files have been deleted.  Are they available somewhere else?

I uploaded the file again. It's too large to send as an email attachment. Try this link. You should be able to download it. In some cases your browser may require permission to download.

https://www.dropbox.com/s/0e5ixtu0qb5v88w/Installing_Trigger_Return_Sear_Springs_P210A_Rev3.pdf?dl=0

Tim