Stripped Trigger Module with Geissele Trigger

3296 Views 12 Replies 8 Participants Last post by s4mur41h4x0r, Dec 6, 2014

s4mur41h4x0r

Discussion Starter · Dec 6, 2014 (Edited)

I am pissed, I was working with my SCAR and while using it the grip stripped off the trigger module. I noticed the grip was really loose and when I pulled on the grip the screw and grip pulled right out. I wasn't doing anything aggressive with the gun, just regular use.

I run the Geissele Super Scar trigger with the supplied shorter screw which only makes contact with about 2/3 of the trigger module threads, only other mods are PMM sling mounts and an engraved upper, I am still using the factory A2 grip.

So now I have a stripped lower that cannot support a grip(i.e. useless)...So I can only think of a couple things:

1. Take the factory screw and grind it flush with the lower so it can grab the remaining threads without interring with the trigger
2. Remove the Geissele trigger and put the factory trigger back in with the original screw(Not what I want to do)
3. Get a slightly larger screw and drill and retap the trigger module
4. Buy a new OEM trigger module (Have had one on backorder with FN for about 8 months, only interested in OEM)

Should I reach out to Geissele or FN about this? I think FN will absolutely tell me to pound sand since I "modified" the gun and I dont know if Geissele will be willing to help or not.

Anybody else ran into this BS?

<<Please read this>>
EDIT TO ADD: Thanks to the guy's who pointed out to me that I did NOT put the square nut back in the trigger slot as Tal posted photo of, this was my mistake, not anyone elses...

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akitainu

· #2 · Dec 6, 2014 (Edited)

I think the easiest/cheapest thing to try would be option 1. Grind down the OEM screw to clear the trigger. But if it still wiggles, try for the new module.

EDIT: I just realized from the following two posts that it doesn't sound like the nut is in place. D'oh. So much for my troubleshooting skills.

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Jarod Legsdin

· #3 · Dec 6, 2014

what got stripped the bolt for the grip in the SCAR seats into a Square nut that can be replaced?

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Talhoffer

· #4 · Dec 6, 2014

You should have a small silver square nut in the grip tang that the grip screw threads into, the grip screw was not designed to thread solely into the polymer lower. If you are missing the square nut under your grip you'll need to locate one, if the screw stripped simple fix, just replace the square nut.

This is what the nut looks like and it drops in to the small slot in the grip tang.

See less See more

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farmerted

· #5 · Dec 6, 2014

Yeah, he's missing something or strong as an ape.

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ShootingSight

· #6 · Dec 6, 2014

I have replacement short screws I supply with all my triggers, for those people who have an after market pistol grip - to avoid the screw hitting the trigger. M6x25, fits a 5mm hex.

E-mail me your address, and I'll send you one for free. If it fixes it, you win. If not, you need to replace the nut, and now you have a spare screw. And here is a link for M6 square nuts. They are 5mm high, and you have to buy a pack of 100 for $12. If you go that route, send me a handful as payment for the screw, so we'll both have spares to give away to other people who get in the same bind.

McMaster-Carr

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s4mur41h4x0r

Discussion Starter · #7 · Dec 6, 2014

Talhoffer said:
You should have a small silver square nut in the grip tang that the grip screw threads into, the grip screw was not designed to thread solely into the polymer lower. If you are missing the square nut under your grip you'll need to locate one, if the screw stripped simple fix, just replace the square nut.

This is what the nut looks like and it drops in to the small slot in the grip tang.

Holy S**T how the hell did I forget to put that back!! Damn that was a dumb mistake, I had the nut on the original screw I didn't insert it back into that slot...that it is on me.

Ok I feel MUCH better, I was thinking how the hell could FN depend on the polymer only???

Thank you!!

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Grinder

· #8 · Dec 6, 2014 (Edited)

Did you install it with the nut in the module? That supports alot of the pressure.
It shouldn't have pulled out if you did
Sounds like the screw may have been over-tightened to strip the threads
What color is your SCAR ?
Someone here may have one to sell you reasonable

Just saw some faster typers figured it out

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s4mur41h4x0r

Discussion Starter · #9 · Dec 6, 2014

ShootingSight said:
I have replacement short screws I supply with all my triggers, for those people who have an after market pistol grip - to avoid the screw hitting the trigger. M6x25, fits a 5mm hex.

E-mail me your address, and I'll send you one for free. If it fixes it, you win. If not, you need to replace the nut, and now you have a spare screw. And here is a link for M6 square nuts. They are 5mm high, and you have to buy a pack of 100 for $12. If you go that route, send me a handful as payment for the screw, so we'll both have spares to give away to other people who get in the same bind.

McMaster-Carr

Thanks for the offer Art, I appreciate it. I just found out that I did not put the nut back in the slot and was running on the polymer only...Once I put that But back in it should be back to 100%!!

Hey on the plus I learned something today!!

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Talhoffer

· #10 · Dec 6, 2014 (Edited)

s4mur41h4x0r said:
Holy S**T how the hell did I forget to put that back!! Damn that was a dumb mistake, I had the nut on the original screw I didn't insert it back into that slot...that it is on me.

Ok I feel MUCH better, I was thinking how the hell could FN depend on the polymer only???

Thank you!!

Just make sure the screw you are using with the grip will thread on the old nut by hand, it should not take anything but your hand to thread it on. If the new screw does not easily thread in the nut it could be the wrong thread or the screw itself is FUBARED, do not force it. Do this while the nut and screw are out of the lower, it's probably fine but I recall some guys received the wrong screw's with their grips.

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s4mur41h4x0r

Discussion Starter · #11 · Dec 6, 2014

Talhoffer said:
Just make sure the screw you are using with the grip will thread on the old nut by hand, it should not take anything but your hand to thread it on. If the new screw does not easily thread in the nut it could be the wrong thread or the screw itself is FUBARED, do not force it. Do this while the nut and screw are out of the lower, it's probably fine but I recall some guys received the wrong screw's with their grips.

It threaded right back in and is completely secure now! Glad to find this was a simple(dumb) mistake to fix on my part

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SONYtec

· #12 · Dec 6, 2014

That was easy.

And you were worried.

FNForum, comes through!!!

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s4mur41h4x0r

Discussion Starter · #13 · Dec 6, 2014

SONYtec said:
That was easy.

And you were worried.

FNForum, comes through!!!

One of the many perks of this forum! Awesome/helpful members

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