Trigger fatigue

[toonmeister]

My usual range gun these days is the SIG P320in 9mm.

My only complaint is that I get trigger fatigue after a number of rounds - a little discomfort/pain from the vibration in the trigger.

Never happens with my Glock 22. The only observable difference is that the SIG has a metal trigger.

Any ideas if that is the cause, and or a solution?

Toon.

[_TomT_]

How many rounds do you shoot in a single trip? Also gloves helps a lot.

[SkyHawk]

IIRC Sig has a new style trigger for the 320 to prevent the trigger slap

http://www.ar15.com/forums/t_5_4/158362_P320_back_from_SIG_for_trigger_slap_issue.html

Sig will provide and install it for free. Contact them. Reminds me that I need to send mine in...

In this photo, the new trigger is installed. The old one is laying on the side of the gun. Note that the new trigger has a top filler built in (in red circle) where the old one does not have that, and the new trigger has a #2 stamped on the back (not shown). That is how you can tell which one you have.

[toonmeister]

Could you elaborate?

You say "trigger fatigue", which would suggest that your finger is becoming tired.

But then you talk about pain, which is not the same as fatigue.

You might be talking about "trigger bite". Google that phrase for a lot of discussion.

I'm not really sure what to call it. It is not a sharp "pain" as in part of the trigger face is scratching, cutting, or rubbing.

After about 75 rounds, my trigger finger gets sore; it is significant enough that I noticed it - and noticed the absence of it with the Glock 22.

My trigger finger is not getting tired. I Just shot 100+ rounds yesterday with my Glock without feeling the same kind of pain/discomfort. And no fatigue. So I'm wondering if a plastic trigger ( or some other trigger) might eliminate it.

[toonmeister]

IIRC Sig has a new style trigger for the 320 to prevent the trigger slap

http://www.ar15.com/forums/t_5_4/158362_P320_back_from_SIG_for_trigger_slap_issue.html

Sig will provide and install it for free. Contact them. Reminds me that I need to send mine in...

In this photo, the new trigger is installed. The old one is laying on the side of the gun. Note that the new trigger has a top filler built in (in red circle) where the old one does not have that, and the new trigger has a #2 stamped on the back (not shown). That is how you can tell which one you have.

Thanks for the link. Will have to read it when I have more time.

[saudadeii]

The Sig-o-philes refer to it as the "Adverse" trigger. Reportedly, this is a Sig term. Hickok45 even reported some trigger bite. I have a 320 Compact with the old style trigger. I've never experienced any "bite".

However, I do experience fatigue at the range but that's likely due to shooting several 100 rounds through different handguns including some revolver and 1911 action.

[L84CABO]

A glove will probably help the situation until you can get the gun back to Sig for the upgrade. Nice that they have a solution.

[.sam.]

Same here with my P320, bottom part of my trigger finger would become really irritated.

Apex flat faced trigger solved it completely. I really like flat faced triggers though =).

[L84CABO]

Same here with my P320, bottom part of my trigger finger would become really irritated.

Apex flat faced trigger solved it completely. I really like flat faced triggers though =).

Ya know, that's interesting. I'm running an Apex flat faced trigger in both my M&P CORE 9mm and my M&P 45. I love the trigger and it's fine in the 9mm...but man there's a lot of recoil feedback through the trigger in the 45. And the recoil/vibration through the little safety lever in the middle of the trigger is enough to give me a blister after 150 rounds or so.

[rlewpolar]

Just a guess but maybe the Sig trigger is slightly angled differently than the Glock trigger, putting strain on your tendon. Which is why a flat trigger, or the new Sig trigger will most likely help. Sounds like an idiosyncratic problem in that many other shooters won't have this problem. Every hand is different.


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[Hhsohn]

Ya know, that's interesting. I'm running an Apex flat faced trigger in both my M&P CORE 9mm and my M&P 45. I love the trigger and it's fine in the 9mm...but man there's a lot of recoil feedback through the trigger in the 45. And the recoil/vibration through the little safety lever in the middle of the trigger is enough to give me a blister after 150 rounds or so.

Lol... wait until you get to try out a CZ-52 with a trigger "slap" syndrome. My finger was going numb after about 50 rounds... but yes, bad trigger design is quite possible.