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Polymer 80 Barrel Issue

17396 Views 57 Replies 17 Participants Last post by  JAA
Completed a Polymer 80 build ie Glock 19 Gen 3without issues. After successfully putting 30 rnds down range cleaned gun. Noticed that there were gouge marks on each side of the barrel near the breach area that contacts the locking block. Put another 60 rnds through with no discernible difference in the gouges. Has anyone else experienced this issue?
Look forward to your thoughts
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My guess is that most aftermarket barrels have tighter tolerances than oem, so that would be the cause. I'm definitely not buying the "normal wear and tear" excuse either. But then again, I believe these kits were meant for use with oem Glock parts? Don't quote me on that.
 

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I’m not being flippant or provocative with these questions, I’m seeking answers. If the gun functions and there is no sign of a critical failure what is the problem? Can the nicked portion be relieved/polished?
 

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Discussion Starter · #24 ·
Understand your point. If it works why fix it.
My issue is that in every other handgun I own, this doesn’t happen and I’d like to know why.
As to your question can the gouges/nicks be polished out. Yes they can to a degree. I’ve used Mothers Mag/Al polish with a dremel and cleaned it up fairly well however in my next range session the gouges came back to the same degree. I won’t be polishing it anymore. Going forward, if it ain’t broken I won’t be fixing it! I would just like to know why.
Thanks
 

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Just get a Glock. As far as the slide finish imperfection, I could car less. My slide surfaces get scratched up and gouged anway. The barrel hood side wear is concerning. Why put unnecessary stress in your life. Glock has this thing figured out. The wannabes and alsorans don’t.
 

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Discussion Starter · #26 ·
Just get a Glock. As far as the slide finish imperfection, I could car less. The barrel hood side wear is concerning. Why put unnecessary stress in your life. Glock has this thing figured out. The wannabes and alsorans don’t.
Don’t disagree. Don’t like how the Glocks fit my hand. Prefer the Polymer 80 1911 type fit much better in my hand with the additional benefit of being able to tinker around with it while almost doubling the cost of a Glock 19.


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Don’t disagree. Don’t like how the Glocks fit my hand. Prefer the Polymer 80 1911 type fit much better in my hand with the additional benefit of being able to tinker around with it while almost doubling the cost of a Glock 19.


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That’s exactly why I decided to build one in fact like it so much that built two. The P80 grip is awesome. I have been shooting my g19 a lot and gouging hasn’t progressed. I believe that aftermarket barrels have less tolerance, I noticed a bit more of play with the factory barrel.


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Don’t disagree. Don’t like how the Glocks fit my hand. Prefer the Polymer 80 1911 type fit much better in my hand with the additional benefit of being able to tinker around with it while almost doubling the cost of a Glock 19.


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The new FN 509 may have solved this problem for you. The Gen. 4 22 frame sans a back strap fits me like a glove. Search over.

I admire you for working to find something that works.
 

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While the P80 is not a Glock, it also has no serial number, no 4473, no paper trail that allows a socialist government (ie: Democrats) to find you and it and is something you built with your own hands. In this total Gun hating time we are now in, having untraceable personal firearms spells freedom.
 

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Discussion Starter · #31 ·
Thanks for the suggestion- have to take a look/feel at the FN-509 next time I’m at my local gun store.
As for the non serialized Polymer 80 types The Glockstore was practically giving them away about a month ago. Have to check them out again.
 

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Tha
Understand your point. If it works why fix it.
My issue is that in every other handgun I own, this doesn’t happen and I’d like to know why.
As to your question can the gouges/nicks be polished out. Yes they can to a degree. I’ve used Mothers Mag/Al polish with a dremel and cleaned it up fairly well however in my next range session the gouges came back to the same degree. I won’t be polishing it anymore. Going forward, if it ain’t broken I won’t be fixing it! I would just like to know why.
Thanks
Thanks for a clear cut answer. Its appreciated.
 

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I used a Brownells slide, and Agency Arms stainless barrel. The fit is pretty tight, and my barrel is getting marred by the locking block as well. After nothing but FTFs on my first range trip, I took the entire gun apart, and polished every single piece I could polish. I even sanded/buffed the rails with some 1200/1800 grit sandpaper. My 2nd range trip was great. A mix of Federal, Blazer, and Browning ammo 115/124gr, and it all ran flawlessly. Unfortunately my barrel continued to take a beating from the locking block. So this has to just be an issue with aftermarket barrels, or the locking blocks themselves, and cuts for them in the P80 frames are out of spec. I don't know where to go from here. My pistol runs like a champ, and the sole purpose of it is having no serial number. I might just take a file, and flatten out the gouges, and maybe even file the locking block notches down a just a bit. Good luck with your builds, and hopefully we can find some answers.
 

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My thought is to smooth down that pointed edge with a dremel and or file, then follow with progressively finer grit sand paper starting at 200 grit. It should not be doing that. The geometry is off somewhere.
 

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Discussion Starter · #35 ·
Brass
My P80 ran fine as previously stated and continues to run great. The gouging on the bottom of the barrel continues. I use a dermel with Mothers polish to keep on the barrel after each range visit but it continues to occur. Has anybody used a factory barrel with a Polymer 80 build? If so, do they have the same problem ie barrel gouging?
 

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Discussion Starter · #36 ·
Sorry for the poor sentence structure. It should read as follows: “I use a dermel with Mothers to polish the bottom of the barrel after each range visit but it continues to occur.”
 

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View attachment 400676 My P80 ran fine as previously stated and continues to run great. The gouging on the bottom of the barrel continues. I use a dermel with Mothers polish to keep on the barrel after each range visit but it continues to occur. Has anybody used a factory barrel with a Polymer 80 build? If so, do they have the same problem ie barrel gouging?
I am using OEM barrels on my P80 builds, and have no barrel gouging. Like you, I did polish front and rear rails, including the frame.
 

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Discussion Starter · #38 ·
Interesting, I to polished the front and rear rails on my P80 build prior to firing 1st round. Looks like the only differences are the barrels and the actual build itself. Looks like my next step is to buy a “Glock” OEM barrel.
Thanks for your timely response.
 

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Interesting, I to polished the front and rear rails on my P80 build prior to firing 1st round. Looks like the only differences are the barrels and the actual build itself. Looks like my next step is to buy a “Glock” OEM barrel.
Thanks for your timely response.
No problem. I am almost certain an OEM barrel will correct your problem. Good Luck.
 

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While the P80 is not a Glock, it also has no serial number, no 4473, no paper trail that allows a socialist government (ie: Democrats) to find you and it and is something you built with your own hands. In this total Gun hating time we are now in, having untraceable personal firearms spells freedom.
P80’s ordered off the internet would be far more tracable than paper 4473’s. In a true confiscation situation, lots of FFL holders will likely have accidental fires break out in document storage rooms. The electronic orders for P80s leave an everlasting, traceable trail on the other hand.
 
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