Do I have to use overtravel screw

[piddler]

I just replaced the stock trigger on my Defender with a Greider short trigger,which comes with an overtravel screw. I would rather not use the screw because I don't want to have to worry about it moving(I will use loctite if I use the screw). I see conflicting opinions on the safety of leaving it out. Some say they routinely discard it. At least one post on here says it can cause double firing or worse. Everything is flawless dry-firing. Question: if I fire it without any issue(it single fires), does that mean it's ok to leave it out(in other words, the fit is good and doesn't need it-original did not have it) or is it a progressive problem that eventually may/will surface? Thanks for help.

[Joni Lynn]

If you don't want to use it then don't. It's not necessary and nothing bad will happen if you omit it. If you decide to use it it must be adjusted so that the sear is allowed to move far enough that it doesn't touch the hammer at all as it falls.

Welcome to the forum.

[log man]

As long as the bow doesn't come back too far and contact the sear spring. As you will note the trigger does stop it's rearward movement against the mag catch and should not be stopped by anything else. By checking the trigger without the GS in place you will be able to see. The problem comes up as triggers with the screw do not always have enough material to stop the trigger without it, since it has a stop screw that affords you the control to do so.

LOG

[Joshua M. Smith]

As long as the bow doesn't come back too far and contact the sear spring. As you will note the trigger does stop it's rearward movement against the mag catch and should not be stopped by anything else. By checking the trigger without the GS in place you will be able to see. The problem comes up as triggers with the screw do not always have enough material to stop the trigger without it, since it has a stop screw that affords you the control to do so.

LOG

As well, STI and Fusion quick removal grip safeties will allow the trigger to come back far enough to bind the sear and disconnector, which will likely cause full auto fire, or hammer follow at the least. Mine doubled.

These grip safeties should not be used without the screw in place.

Otherwise, what Logman said. Try it and if it doesn't shoot right, use the screw.

I've heard of folks setting the screw and using a vice to sorta' crush the screw into place, so that it'll never move again. I've not tried this.

Josh <><

[piddler]

Thanks. I appreciate the replies.

[wichaka]

You can leave it out with out any worries, as the trigger will stop on the grip safety lug........like they have many years before that adjustment screw was invented.

[Dave Berryhill]

If you use a trigger with an overtravel stop on a pistol with a Series 80 firing pin safety then you will need to adjust or replace the safety levers so they will lift the firing pin safety plunger earlier. This is frequently overlooked when people install an aftermarket trigger in a Series 80 pistol.

Failure to do this may cause the firing pin to strike the safety plunger each time the pistol is fired, putting dings in both. Eventually the firing pin, the safety plunger or both will get stuck.

[George Smith]

As well, STI and Fusion quick removal grip safeties will allow the trigger to come back far enough to bind the sear and disconnector, which will likely cause full auto fire, or hammer follow at the least. Mine doubled.

These grip safeties should not be used without the screw in place.

Otherwise, what Logman said. Try it and if it doesn't shoot right, use the screw.

I've heard of folks setting the screw and using a vice to sorta' crush the screw into place, so that it'll never move again. I've not tried this.

Josh <><

Im with Josh,

In a GI gun the trigger stops on the grip safety, the sear stops on the relief on the thumb safety etc. With aftermarket parts throughout there is a good chance the trigger comes back so far it lodges the disconector or the disconector holds the sear off the hammer etc.
With an empty gun, pull the trigger a little aggressivly. rack the slide, make sure the disconect funtion works, make sure the hammer doesn't follow by just racking the slide. Some guns will actually bind the disconect enough that you feel the slide beign sticky because of the force required to push the disconect down.
geo

www.egw-guns.com

[log man]

If you use a trigger with an overtravel stop on a pistol with a Series 80 firing pin safety then you will need to adjust or replace the safety levers so they will lift the firing pin safety plunger earlier. This is frequently overlooked when people install an aftermarket trigger in a Series 80 pistol.

Failure to do this may cause the firing pin to strike the safety plunger each time the pistol is fired, putting dings in both. Eventually the firing pin, the safety plunger or both will get stuck.

Good point and have experienced this on an Officers model after replacing the non-adjustable trigger. It didn't get off the bench before the problem was noticed as I enjoy shooting a nylon rod to check firing pin hit strength after any trigger tuning. The Colt plunger lever stamped "N" should be used and gives the highest lift.

LOG