From my experience with many Glocks over many years a minus connector and a 4.5# firing pin spring works well as long as the you practice preventative maintenance.
Federal ammunition or primers is a good choice when using a reduced power FPS which you may want to change every 5,000 rounds. YMMV
Does anyone have any experience with reduced power safety plunger springs?
Today I saw a local firearms trainer make a video showing how he rounds off the edges on a gen 5 safety plunger, essentially making it round on the bottom facing trigger bar. That cannot be safe, can it?
So I just installed a reduced power plunger spring and it did as you suggested. It’s pull is now just over 5lbs. I dropped a 3.5 connector in my Gen 2 and it reduced the trigger pull by over 2lbs. It is now at about 4.5lbs. I tend to think that older gens respond better to replacing the connector than the Gen 5.
I now have a training gun with a better trigger pull than my competition gun. Only mods on my Gen 5 are a 3.5lb connector and a reduced power plunger spring.
The Gen 5’s trigger has gotten grittier over time. I suspect the peening on the safety plunger and the rubbing of the trigger bar against the crappy finish of the right side of the slide release is the culprit. No amount of cleaning seems to help it. It’s not horrible, just noticeable when shooting groups. Shooting at speed, I don’t notice it. I wish Glock made a single sided OEM Gen 5 slide release. I would buy one in a heatbeat.
"Next time somebody says USPSA or IPSC is all hosing, junk punch them." - Les Pepperoni
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Make your own. Slice that side off.