Really sorry for the length of this post. I'm thinking if I give enough detail, someone might identify the problem.
This weekend, I made my first attempt at gun tuning; took apart my trigger to polish all the mating surfaces. I used Russell Sauer’s excellent RS2 trigger guide:
But when I gathered everything for the reassembly, another loose part rolled out of the trigger unit shell. It’s a spring, about 3/4” long by ¼:” in diameter. It’s definitely not the sear spring, the safety catch retention spring, or the spring-like component that fits between the top of the trigger weight adjustment screw and the trigger lever. I didn’t even notice it when I disassembled the trigger unit because frankly, I stopped looking when I had all the pieces pictured in Russell Sauer’s diagrams.
I tried all sorts of configurations, but I just couldn’t find a home for this extra spring. Since it’s wasn’t pictured anywhere in the trigger guide, I finally shrugged and just reassembled the trigger without this spring. I figured something would immediately jam or at least feel wrong when I tried to fire the gun. But it felt great (much smoother and crisper) and worked fine for the first dozen or so shots. So I started adjusting the pull weight and the length of the two stages per Sauer’s instructions.
After maybe my tenth adjustment, I started to line up a test shot and bang! the gun fires practically as soon as I touch the trigger. So I back off on the first stage screw. No effect. Back it off a lot more, and I got some results for a few more shots, but then the second stage started getting flaky. A few more adjustments and suddenly I was back to the hair trigger again.
I was just staring at the trigger, scratching my head when a little piece drops out: it’s a broken c-clip that retains one of the pins. If I hadn’t been bench shooting, I never would have seen it fall out. I fiddle with the trigger more and then the sear spring drops out, only it’s crimped and flattened near the middle, like someone took a pair of needle nosed pliers to it.
I think I must have weakened that c-clip when I first popped it off, and then maybe the loose pin unseated the sear spring. At that point I stopped shooting. Mind you, the gun was still firing at that point, it just has a very unpredictable trigger.
I’m going to my hardware store tonight to look for replacement parts, but man, I could really use some advice. Like especially: what the heck could that extra little spring might be for?
I can go back in, replace the c-clip and sear spring and reassemble. But without finding a home for that mystery spring, it might just self destruct again.
As it is, it’s just not safe (or fun) to shoot with that unpredictable trigger. I’d love to hear from any one who has any ideas.
I miss my trusty little springer.