r/polymer80 12h ago

Geisler defense Slide issue

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5 Upvotes

This is my first geisler defense build & Ive been working on it for a few days now. For some reason when go to rack it that slide locks in place ( without the slide release). I have all pins in correctly & Ive shaved the lower good so i don’t understand the issue can anyone help? ( i have pictures of the internals as well)


r/polymer80 20h ago

This thing shoots so flat 😍

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40 Upvotes

r/polymer80 22h ago

now shes a 23

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12 Upvotes

r/polymer80 1d ago

where to buy 80% frames/AR receivers aside front mas defense??!!!

0 Upvotes

r/polymer80 1d ago

Steel city arsenal Magwell + Magazine extension compatibility

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3 Upvotes

Recently added a steel city arsenal magwell to my pf940c and overall the ergonomics are incredible, changes the entire grip feel but in a more secure/stable way. I’m curious what magazine extensions work with it, I’ve been between purchasing the Glock Store extensions or the Sheild Arms extensions. My main concern is the top ridge / lips of the magazine extension blocking the magazine from being inserted fully due to hitting the magwell. If anyone has a similar set up and any advice I’d love to hear it.


r/polymer80 2d ago

Dead trigger

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8 Upvotes

r/polymer80 3d ago

Is this savable, Pin bent and shifted upwards in the frame but it was barley even in

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12 Upvotes

r/polymer80 3d ago

Next build?

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31 Upvotes

So I just finished building this 3d 26 a few days ago, finished my p80 17 2 months ago. I live Ina state where 3d printing/ghost guns/built guns arnt banned, so any build suggestions??


r/polymer80 3d ago

Geisler Defense 19x Rear Rails

1 Upvotes

So I’m looking into grabbing a Geisler Defense frame, but most people say the front rails sit really high. Then I see other people’s builds, and everything looks nice and flush. Is it just hit or miss, or is there something people do to make them fit?


r/polymer80 4d ago

Ghostgunjigs

1 Upvotes

IS Ghostgunjigs legit because I ordered the jig and I accidentally forgot to put building name and I sent a email telling them that a couple hours ago and I still nvr got a response?


r/polymer80 4d ago

Another 22 Build

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14 Upvotes

r/polymer80 4d ago

76% lower came with the wrong locking block.

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18 Upvotes

The front locking block that came with my 76% is too big. It looks like its for a 17. Any recs on where I can find one? Ive never used the slit ones.


r/polymer80 4d ago

My Glocks

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33 Upvotes

1 Glock 2 Glonks (p80 76% and 3Dp p80)


r/polymer80 5d ago

tip for building 76% frames with split rear rail modules!

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8 Upvotes

when removing material from the cavity that the trigger housing goes in, make sure to remove material until the RRM and trigger housing is easy to insert and remove from the cavity. if the cavity is too tight, it could cause the connector spring to be compressed, leading to trigger reset failures.

this doesnt happen with one-piece RRMs because its impossible to fit the RRM in until more than enough material has been removed, ensuring enough space is always available with builds utilizing them!


r/polymer80 5d ago

$104 Million Verdict Awarded Against Husky Armory

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38 Upvotes

r/polymer80 5d ago

Brother botched a p80 build (actual 80 not 76) . He gave it to me for free and said if I can fix it I can have it .. he used a dremel and a crappy fine bit . Is this frame at all salvageable in any way or is it done for ?

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14 Upvotes

As stated my brother totally screwed up this p 80 build and told me I can have it if I can fix it .. is there a way to Jb weld and redo this or is it trash? I told him to put the tools down because to me it looks like he totally screwed it .. any way it’s fixable ? I’d love to make it usable even if it doesn’t look pretty .. any help appreciated


r/polymer80 5d ago

1k rounds

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5 Upvotes

shooting just fine . the p80 im using is mine that i built just like all of you .


r/polymer80 6d ago

Made this one a few years back

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45 Upvotes

I would probably go a different route if I were to build another. thoughts?


r/polymer80 6d ago

Need Troubleshooting Assistance With Build

1 Upvotes

Hi, I have a recently built PF940v2 with all OE Glock internals, a Faxon barrel and a Brownell’s optic cut slide. The pistol operates fine and then the slide locks as though the mag is empty. The problem is the mag is not empty, furthermore the trigger seems to fail to reset during these failures. Once I release the slide lock a new round is chambered and the pistol will fire. Any ideas as to what is going on?


r/polymer80 6d ago

Geisler takedown lever shim?

2 Upvotes

Guys I looked it up, but couldn't find any info. How do I shim my takedown lever on geisler gen 2?

Just found out today after bending and polishing my rear rails that when I dry fire my slide releases, meaning I'm having takedown lever issues...

I seen something in here about shimming the takedown lever, but couldn't find any info on how to do it properly.


r/polymer80 6d ago

Peanut buttter sammich 26L

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75 Upvotes

r/polymer80 7d ago

P80 26L

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25 Upvotes

Dagger slide with dust cover, 17 round mag with a +5 extension.


r/polymer80 7d ago

Peanut Butter Jelly Time!!!

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83 Upvotes

This slide is from my peanut butter geisler, but I got a jelly themed slide coming in the mail soon... Stay posted!


r/polymer80 8d ago

Constant jamming after 1 round! Failed ejection, sometimes ejecting to left side.

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17 Upvotes

GST-9. Please see all of my pics. I polished my ramp and sides. Most I ever got was 3 rounds out of it. I never tried another magazine yet though. Tried 2 different kinds of ammo. Doesn’t lock back after last round, but it’ll lock back with an empty magazine. Any help please? Driving me nuts! Thanks all!


r/polymer80 8d ago

P80 G26 won’t take G19 mags

2 Upvotes

Hello from my research G26 P80 should take G19 mags no problem, any reason why it might not work? The G26 mag works perfectly, I printed a G19toG26 adapter sleeve even though It should work without one but that doesn’t work either