[ARCHIVED THREAD] - Glock Barrel Problem (Page 1 of 2)
Posted: 1/25/2005 3:51:52 PM EDT
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I have a Glock 35 that has approx. 1500 rounds through it. I bought it about 4 months ago NIB from a local dealer. I, of course, went directly to the range and shot a few hundred rounds through it then came home and immediately cleaned it. When I broke it down, I noticed something that looked like buildup in the barrel. I though it was just fouling from my day at the range. I scrubbed it w/ a brush, cleaner, and cloth but could not get rid of it. I thought maybe it was just stubborn and needed to be cleaned out by firing more rounds down the pipe, which I did. Now today, I went and shot again, and came home and cleaned it. I can not get rid of the deposits!! It is about 1/3 of the way down the barrel and covers it 360 degrees. I've used borescrubber, hoppes #9, and a bunch of different types of solvents to get rid of this. I'm starting to wonder if it is a defect. I've tried to take a picture of the deposit, but it doesn't show to well. Any ideas of what I can try to get rid of it? And just so you know, I treat my guns like they are my children. They are always properly cleaned and maintained. I have only shot fmj's through this gun, so there should be no possiblity of leading. Help!!! Nick 
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I havent seen anything like that in mine...and I have way more ammo than that through it. I would soak it overnight in solvent, then give it a good brass brush scrubbing with some #9 or rem-oil. If you still cant clear it out...DONT SHOOT THROUGH IT. There is a visible obstruction in the barrel...take it back to the store and have them ship it out...most likely Glock will send you a new barrel. It should clean up with some elbow grease, but dont go so far you damage the bore...just be safe. While i have never had the famous ka-boom happen to me, i dont think its a good idea to shoot through a barrel with a know problem. |
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Dude, you should be okay. It is after all a Glock barrel. You should also, be okay for another 1000 rounds without cleaning if you absolutely have to do it. That is of course one of the credits many people give to Glocks. So figure out if your gun is in the same club. Keep in mind though that Glock has great customer service... I love 1911's and that is my preference if I have to hit what I am shooting at. BUT, try to get that thing clean with some strong solvent and see what happens. Soak a bunch of patches in solvent and stuff them in the barrel. Or, fill a coffee can with a half inch or so of solvent and soak it overnight. I've got a 34 I shoot the hell out of and it's amazing... Think about a custom barrel if that floats your boat. |
| Pretty common in new Glock barrels as far as I know. The deposits will clear out with more shooting. Maybe the coating being ripped out by the ammo or some such, but nothing to worry about. If it concerns you greatly, take that pic to Glocktalk...they will know the rest of the story. |
and a 1234 1234 feel that bad boy twitch. Are you by chance a greasman fan? |
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I had the same build up in my HK USP. It eventually went away. It never effected accuracy or reliability. Funny story, I took it in to a loccal gun store to ask what they would clean it out with, and the guy behind the counter took the barrel, and started walking toward the back room while explaining that he was going to grind it with his dremmel.  I snatched the barrel out of his hand so fast he flinched. It was hard not to slap him. |
FYI there are rubber polishing attachments for Dremmel tools that are great for removing dings and debris. I polish the feed ramps on my pistols with them and recomend it. 
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Another really well made barrel. When will you guys get it?? Glocks are junk. The FBI & ICE uses them because they buy them CHEAP! After those agencies recieve them from Glock, their armorers go thru them ,replacing as many as 6 parts to "fix" them. Go ahead, buy another POS from Glock! They can use the money to finance their Neo Nazi Government of Austria! |
+1 It's the coating being worn off. Looks like deposits, but really isn't. If you don't feel comfortable with the opinions you get here go to the General Glocking section of Glock Talk. There is more Glock experience there than you can shake a stick at. |
 
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And which 6 parts would that be? Let's not include sights, because that is not a defective part that REQUIRES changing, but are changed for low light shooting, and sight profile prefrences. Lets see.... DO they change the barrel? Nope. Frame? nope... Slide? Nope... Recoil spring? Only when worn.... Connector? Only if they want a heavier trigger pull, but AFAIK, FBI uses the standard 5.5 connector TRigger reset spring? Nope, unless worn. TRigger bar? Nah.. Well, then what DO they replace? Please let me know, as they failed to tell me about "at least 6 parts" that need to be fixed before they can be used in the Glock armorer course. I take it that you are a Glock certified armorer? If not, the STFU. If so, let's hear what parts are defective from the factory. BTW, I love my 1911's, and I love my Glock. |
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Ok. I soaked the barrel for about 16 hours in #9 and then ran a bore brush and pads down the barrel again to try and get the crud out. It did nothing. So ... I got on the phone with Glock and the guy I spoke with thought it sounded like a squib round based on how I described it. Here is a picture I took today after soaking it and scrubbing it. Does it look like a squib round to the professionals here or does it look like something else. The barrel does not seem bulged and the only thing that is noticeable is what is pictured. Thoughts? Nick 
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Put down the crack pipe.
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I just took mine apart to see if I had anything similar.....maybe I am seeing things, but now when I look at the base of the grooves, I think I can see some buildup...allthough to a much lesser degree than yours. A quick look reveals an almost mirror finish inside, but if I stare long enough i can make out some deposits. The buildup in your pic looks like the base of the grooves....not a place that will effect the bullet (at least not as much)....I say take it to a pro smith and get their opinion. They arent going to charge you to just look at something quickly and say if its safe to shoot. Good luck, let us know how it turns out. |
The barrel has no traditional lands or grooves - its a hexagonal barrel, the "lands and grooves" are part of the shape of the barrel. Its just build up, that doesnt matter, or effect anything. |
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These will get it clean. I use them all of the time to remove carbon fouling. Brownells Double-Tuff Bore Brushes |
Sorry, my mistake. The transition between the deepest portion and maximum protrusion of the bullet stabilizing spiral in the fore mentioned barrel appears in the photograph to have some debris lodged therein. 
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I have the answer, I believe. I had a Glock barrel do the same thing. It definitely was not fouling. Didn't affect the function or accuracy of the pistol at all. I called Glock and was told it was a flaking of a coating in the barrel. I could shoot it and not worry about it, or they would replace the barrel for free. I got my barrel replaced since I'm anal about stuff. The serial number on the barrel won't match the frame and slide (which bothers me - remember the anal thing), but it's not too big of a deal. btw - Glocks are an outstanding combat pistol - I own more than a couple of them. |
Good information! Hope nobody's insulted that somebody who actually knows something about Glocks posted the correct analysis. |
+1 Just shoot the shit out of it. Especially since it's new. I totally had the same problem years back when I bought my first Glock and freaked out. In retrospect, I might have been being a little anal about it... Don't use a god damn dental pick or it will fuck up your gun! 
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better put your flame suit on . Post number 6 |
Ya. Unfortunately. I also wonder if the Glock haters have actually owned a Glock or are just talking out of their asses? |