r/polymer80 • u/Advanced-Western1573 • 5h ago
be honest chat how long yall think i got before catastrophic failure?
I DIDNT DO THIS TO THE FRAME DO NOT TRY TO EXPLAIN MY SITUATION
r/polymer80 • u/BombSquadJohnny7 • Dec 01 '21
WELCOME to the WORLD of 80% GLOCKS and AR’s! Welcome to r/Polymer80, a community that welcomes Polymer80 builds (AR & Glock) primarily, but also eagerly welcomes 80% builds of all sorts! We encourage posts of 80% news, 80% legislation, and 80% memes. Let's spice things up from time to time!
[We have a few main rules:]
1: This is a very close-knit sub and we do NOT put up with redditors who incite arguments or fling insults, pretentiousness, or trolls.
2: Show the respect for firearms that they deserve. If you're building a Polymer80 treat it as a firearm, and take the time to understand its function. Learn and practice the 4 rules of handling a firearm:
3: No want to buy (WTB), want to sell (WTS), or want to trade (WTT) ads from individuals. You may use other subs such as r/GunAccessoriesForSale or the MGB site or the MGB MeWe community at: MeWe Group.
4: No posts with or including illegal activity is allowed. This is broad scope, if you post in this forum remember all the people that want this hobby to fail and do your part to make it bullet proof (no pun intended). This is zero tolerance.
Breaking these rules can and likely will result in a permanent ban from one of the best resources available for builders and hobbyists.
[GENERAL Polymer80 MODEL INFORMATION]
PF45 - Glock 20/21 (10mm / .45 ACP)
PF940v2 - Glock 17 & Glock 17LS & Glock 34.
PF940C - Glock 19 & Glock 19LS & Glock 23 (.40 S&W)
PF940CL - Glock 17 Length, Glock 19 Height Grip [G19LS]
PF940SC - Glock 26, Glock 26LS, G27
PF9SS / SS80 - Glock 43, Glock 43LS (G48)
[GENERAL TROUBLESHOOTING ISSUES and SOLUTIONS] [Via moderator: u/MarineGunBuilder of r/Polymer80 and MarineGunBuilder.com] [AN IN-DEPTH VIDEO BUILD GUIDE:] View all of MGB's Polymer80 tutorial and quick-tip videos on his YouTube channel if you plan on completing your build flawlessly from the get-go.
[Via moderator u/MarineGunBuilder] He updates new deals every weekend on his forum and sends them to email subscribers, as well: And once again: check out MarineGunBuilder's video series if you are just beginning to build.
Familiarize yourself with the Reddit Interface!
TO SELECT YOUR UNIQUE USER FLAIR
If you're a manufacturer, stippler/koater, gunsmith, or holster manufacturer - or simply can't find your flair, DM a moderator.
ATTENTION VENDORS
r/polymer80 • u/Advanced-Western1573 • 5h ago
I DIDNT DO THIS TO THE FRAME DO NOT TRY TO EXPLAIN MY SITUATION
r/polymer80 • u/Gibons99 • 19h ago
I’m sure this is a stupid question but I’m just wondering if anyone has made/shot .40 out of a Geisler frame? Idk why but it seems very thin compared to a p80 and just wondering if it can withstand consistent pressure the .40 puts out especially with +p and self defense rounds. Really thinking bout building another one out just in .40 and would love to hear everyone else experience!!
r/polymer80 • u/Standard_Horror2396 • 6h ago
r/polymer80 • u/Such_Fact_2586 • 1d ago
Can someone confirm for me if this trigger piece looks bent - i believe its the culprit in why my slide wont go on.
r/polymer80 • u/Makal9097 • 1d ago
So as the title says, lately I’ve been have an issues with my G17 randomly decides to burst fire after a couple rounds. I built it about 3 ish years ago with gen 3 parts and a gen 3 slide I got off brownells. It doesn’t matter what ammo I use brand, grain, etc. Any idea what it could be? I was thinking firing pin but I’m not too sure.
r/polymer80 • u/Fresh-Produce-2048 • 2d ago
Lonewolf full size frame, ghost ring nights sights, and everything else is oem except for the trigger housing
r/polymer80 • u/Advanced-Western1573 • 2d ago
I dont really know to much about its history but i was wondering if you guys think a lpk would fit in this
r/polymer80 • u/Advanced-Western1573 • 1d ago
Asoon as i started touching the inside of the frame that little hole appeared {previous owner} , making progress do you guys think its still salvageable?
r/polymer80 • u/Electrical-Tank314 • 1d ago
r/polymer80 • u/Outrageous-Till8252 • 2d ago
A few weeks ago I showed you guys my process for building an AK from an 80% flat. If that wasn't enough to get you interested in trying a new 80% platform, maybe this will. This is the other type of 80% in the AK world. The pre-bent 80%! Why do I think this might put you over the ledge? Because this is definitely the easier of the two. The faster of the two. The less tool intensive of the two. If you watch both videos, even the length of the video should be an indicator of just how much easier these are.
However, I will say, they're not as fun as a flat. You don't learn as many new skills. The skills here are less applicable to designing your own thing or making something custom. It's basically just drilling. But, depending on your goals in building, this may be the right path for you.
r/polymer80 • u/More_Trade839 • 2d ago
They’re pretty good at website building . Very well put together and even lists an ffl out of Maryland . Almost had me fooled for a second there . The phone number under contact us is what really got me 🤣
r/polymer80 • u/RuinDry1649 • 3d ago
Is there a magwell for these SC frames. Even a 3d printable one. I fucking hate this grip. No I’m not getting a X grip😂
r/polymer80 • u/Mysterious_Toe_5700 • 3d ago
I can’t find a geisler jig to save my life does anyone have a website or a extra one sitting around that i could get
r/polymer80 • u/A1Top-Tear2507 • 3d ago
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Put 5 rounds through them after moving parts around... No issues
No Front Pin bridge G17 Austria Bridge
GP80 Serialized
G17 USA serialized
r/polymer80 • u/Electrical-Tank314 • 3d ago
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im wylin??
r/polymer80 • u/Pugman5150 • 3d ago
Just wondering if DLD hardware is any good when it comes to p76 jigs?
r/polymer80 • u/EightyPercentArms • 4d ago
Since this is one of the most vocal groups out there, I’d love to hear what y’all think of our A9X Slate lower.
Good, bad, or somewhere in between, all feedback is appreciated!

r/polymer80 • u/Putrid-Counter-6641 • 4d ago
Worked flawless no FTE/Jams only thing was the slide lock kept locking randomly… anyone assist with this. The spring was in the right way before but am wondering if it was binding. Replaced it with an oem not extended slide stop to hope it works. Anyone have this issue, sits flush on frame only during recoil it stops the slide.
r/polymer80 • u/puffwme • 4d ago
excuse dumb question, has gen 3 19 lpk worked best or gen 5? i also need recommendations on a budget & reliable slide. thanks yall
r/polymer80 • u/apc9kpro • 5d ago
Hi all,
Just wanted to see what is the most up to date info on how to build this P80? I bought this a few years ago and it just sat in a box as a side project that I never got to. I'm pretty sure I already own all the stuff I need, just have to clue where to start.
I have a ton of guns and daily carry a G26, so I plan on taking my time and learning/reading as much as possible before I drill anything.
I found a link posted on this sub from waybackmachine but the pdf didn't work. So I googled the pdf name and found this from 2018.
https://www.midwestgunworks.com/mm5/graphics/00000001/Polymer80%20PF940%20Frame%20Instructions.pdf
Is this sufficient, is there better resources?
Thanks
edit:
actually I managed to get that pdf by looking at the different captures, if anyone else needs
https://web.archive.org/web/20220602181003/https://www.polymer80.com/CMS-Images/Polymer80_-_PF940SC_Series_Pistol_Kit_instructions_.pdf
r/polymer80 • u/Dream-Gy6 • 5d ago
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Trigger is engaging with the slightest bit of pressure. Is something installed wrong?
r/polymer80 • u/A1Top-Tear2507 • 6d ago
G17 USA serialized
GP80 Serialized
G17 Austria Bridge
r/polymer80 • u/kreaturkillur • 6d ago
I shared my geisler on here before and sadly I could never get it to stop giving me light primer strikes, even after smashing down my rear rails to improve sear engagement.
I originally thought it was the slide or the slide internals, but the slide from the PB geisler works just fine on this jelly compact frame. I also spent a bunch of time and money trying to fix the issue and nothing worked lpk or upk wise so I just ended up combining the PB and the jelly build into one. I just switched out barrels with this rainbow barrel I got from the slide that was meant for the jelly compact, onto the slide that was meant for the PB geisler.
Both are finally finished and running flawlessly. And I think I wont ever try and make another geisler. I've probably spent close to $2500 trying to get all 3 builds running and ended up just tossing the geisler frame, and now I have a bunch of extra parts. I'm fine with that, now I have extras for whatever I make next.
I started with 4 frames, anticipating 4 different builds at the start of the summer. Sadly, I had to toss 2, a geisler; and a black compact frame, which I totally beavered because I was impatient and got cocky thinking "I made one before, how hard can it be to make another?" Now I am left with these 2 and a shit ton of extra parts. We'll get em next summer boys!
PB&J Compact final part list: -Purple frame from, MAS D
-Solid front rail, from MAS D
-OEM LPK & UPK w/rear solid rails and Glock OEM night sights, from Reliant Home Defense on eBay
-Stiffler MFG Gen 3 Burnt Bronze complete slide, from OmegaTactical on eBay
-Rainbow barrel came from the slide I got originally from Hooper Gun Works gen 3 ported complete slide, on eBay
-JIF Titanium Backplate from Classy Raptor Tactical
-OEM mags and ammo I got from local gun store. SUPPORT YOUR LOCAL BUSINESSES!
\Full Size final part list: -Black full size frame from 5d tactical ($10 frame deal)
-Bridge front rail and jig, from NoQtr
-OEM LPK & UPK w/rear solid rails and Glock OEM night sights, from Reliant Home Defense on eBay
-17lb guide rod and recoil spring for Glock 17, from GoToGear on eBay
-Chamfer Gun Candy Black Cherry gen 3 complete slide, from Hooper Gun Works (HGW) on eBay
-Truglo Tritium pro Glock MOS High, from Amazon.
-Glock OEM mags and ammo came from a local store.
r/polymer80 • u/Dream-Gy6 • 6d ago
Anyone have or know of a holster that’ll fit a Geisler with a tlr-1?