selling a glock... cold blue?

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Jan 4, 2006
Hi, I want to make my glock 21 look its best in order to sell it. It has a little holster wear on it - not bad - so I thought of putting cold blue on it to make the slide look cleaner. But I don't want to harm the thing.

Who knows how to handle this?
I don't think that some holster wear will matter to anyone. Might actually look bad on your part to try cold blue since it won't match the Glock's factory finish.
Nope. Don't do it. Holster wear on a Glock is cosmetic only; though you want it looking good, there is no way that cold blue will match the original finish. The buyer will notice, and the cold bluing will rub off much easier than the original finish too.

After messing with the stuff for years, cold blue (all its many varieties) is 99% pain in the posterior, with only one project I've ever attempted coming out as presentable.
It won't harm it. I doubt it will have any effect unless you're using one of the "cold blues" that's really just some sort of paint. If it's a typical cold blue that involves some sort of oxidation process it won't work at all.
Helpful info... thx. I've been known to use a magic marker to gently stipple something to make it look its best. No harm, and I don't happen to feel it's disingenuous, but it does improve the curb appeal.

"Ooh shiny"
As somebody who carries but isn't a gunsmith here is how I see it.

-Honest holster wear "This gun is reliable (or at least was in the past) and somebody trusted their life to it"

-Cold blue that doesn't match the original finish "If this is what he did to the OUTSIDE what the hell did he mess with inside"
Here in Florida I see previously owned LE Glocks (17 & 22) going for $425. Most of them have holster wear from duty use, which I imagine is similar to yours.

So like the others have already said I wouldnt bother with the time and money needed to refinish your 21, as you would probably come out selling it at a lost in my opinion.....
I also would not buy Glock that has essentially been "magic markered."

Whether it is true or not, the first thing I would think is that the owner was too uh ... "creative" with it.
Does Glock have refinishing services? Perhaps the slide could be refinished, if it is priced low enough to recover your investment. But I would not try tricks to hide wear from righteous use. It will look obviously as if you're trying to hide something.

I would like to share an experience from 2007. I took my own Glock 19 to a gun show to have Glockmeister make some upgrades (night sights, extended slide takedown, upgraded retention spring) to it. I was hit up four times between the entrance door and their table asking if it was for sale, and at least twice on the way out.
Why would you refinish? Why would you worry about the finish? A Glock is not a pretty gun, it is a worker gun. Holster wear shows just that.. this gun has been used.. I would be more apt to buy a used Glock with holster wear than a one that looks fresh...

Sort of a, "why are they getting rid of this?" Rather than, "sucks they had to get rid of this."

With other guns such as 1911's and Smith and Wesson revolvers as well as select rifles and shotguns, condition is everything, BUT it is always dependent on the gun

With a gun such as a Glock, XD, M&P, etc... the more holster wear the better IMO, as long as the gun is free of rust, pitting, and is in good working order.
I agree don't use cold blue on it.

Any gun dealer can smell cold blue across the counter, not to mention clearly see it.
And deduct what he will offer you accordingly.

Another vote for not Cold Bluing it.

It's one of those things were a discerning customer would offer less because of it.

I would take holster wear with no problem, but cold bluing never looks quite right unless it is very, very well done and in an inconspicuous location.
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