[adweisbe]

Comparing photos of this stock barrel to another barrel would you say the 2nd barrel is factory or has it been dremeled?

First photos of the stock barrel:



And now a photo of the suspect barrel:


Your help is much appreciated. It certainly doesn't look factory to me.

This post has been edited by adweisbe: 21 October 2009 - 05:02 PM

[SLM]

The second looks like it has has the sharp edges lightly polished off but that's all. Look at the profile of the bottom of the ramp. They are exact. If it had been ground on they wouldn't have been able to maintain that profile. The only other difference is the mold/stamp/casting/machining like where the feed ramp extends off the barrel. There's some lousy work on the top one that looks like a weld job that the bottom doesn't have.

I'd rather have the bottom one if I had a Glock.

[adweisbe]

SLM thanks for the reply. Is it normal for a Glock barrel to have finish removed from the feed ramp? There was an extra operation to polish the feed ramp after finishing in the suspect barrel that didn't occur in the barrel that is known to be factory stock. My real concern is that the top of the ramp appears to be rolled over compromising case support and making it harder for the cartridge to break over to horizontal during feeding.

[EDIT]
Here is another photo from a different angle.

[/EDIT]

This post has been edited by adweisbe: 22 October 2009 - 06:54 AM

[MarkCO]

Yep, that 2nd one has been dremeled, the color differnece might be heat form the process as well. The roll over at the chamber does not look like much. It will probably feed a little better if it gets polished as it has a lot of surface texture from the process. They did not remove much material.

[mike cyrwus]

The bottom one looks fine, and more inherently reliable.
How much more? Its a glock; 99.98 vs. 99.99% reliable.

[Whitefish]

MarkCO, on Oct 22 2009, 09:40 AM, said:

Yep, that 2nd one has been dremeled, the color differnece might be heat form the process as well. The roll over at the chamber does not look like much. It will probably feed a little better if it gets polished as it has a lot of surface texture from the process. They did not remove much material.

Just to clarify, I think the bottom photo is/was my barrel. It came straight out of a brand new G34 before I even shot it several years ago and was replaced with an aftermarket KKM barrel. It has been sitting in a box of parts since. The barrel was never touched, polished or dremeled (unless by the factory) and is as it came from Glock when the gun was new, absolutely bone stock.

[SA Friday]

The bottom barrel appears to have had the feed ramp polished. Weather it was done at the factory or by someone else, I'm not sure anyone could tell. I have owned 7 glocks, 1st-3rd gens, and none of the barrel's ramps have looked like that.

It doesn't look like they took material from the chamber edge of the feed ramp where you would loose chamber support, but there is material missing from the bottom of the fed ramp on the outside edges. If it works, rock on.

[Duane Thomas]

Bottom line: does it work? If so, don't sweat it.

[Precision40]

Duane Thomas, on Oct 22 2009, 03:06 PM, said:

Bottom line: does it work? If so, don't sweat it.

+1

I polish the crap out of my feed ramps and chamber to a mirror finish on every Glock. Theres enough "meat" there that you would have to do some serious grinding on it to cause any feeding problems.

[MoNsTeR]

I think the factory does this now. I'll check when I get home but I'm pretty sure my newer G34 (MZUxxx, bought this year) has a polished ramp and rounded chamber edges.