Anyone suggest an accurate aftermarket barrel for a Glock 20 that will enhance its accuracy?

I would the LW Alpawolf. I have 3 for varies Glocks, and I haven't had any trouble.

I like my KKM. I had problems with an alpha wolf and returned it. The KKM has been flawless and I’d not look anywhere else if I were getting another Glock barrel.

A big + 1 on KKM. Works great, pretty reasonable price and it doesn't hurt that they're local for me.

Count me in the KKM Precision camp, I have experience with 5 different ones (G26, G19, G21, and two different G40’s). All run great!

Mark in GA

I find it weird that people flock to buying a new Glock and then replace the barrel.

I think its just about squeezing that last little bit of accuracy out of a gun!

For me it was the ability to shoot hard cast lead out of a regular rifled barrel.

I know that plenty of guys shoot lead in regular Glock barrels without incident but it'll give me a little more peace of mind.

A little better case support is nice as well.

Not all pistols need after market barrels to be accurate.

No, it's mostly people buying accessories because they want to dress something up, along with believing junk on the internet written by other people with the same mindset.

I've compared a bunch of factory and aftermarket Glock barrels over the past ~10 years or so, and have learned that most aftermarket barrels are no more accurate than Glock OEM, and some are significantly worse. The same goes for the "can't shoot lead bullets in a Glock" foolishness; most of what I shoot is cast bullets and I've found more tendency for leading in a lot of the aftermarket barrels than in factory Glock. But, the myth continues, as you'll see in pretty much every internet conversation about Glock barrels.

This was my exact reasoning as well. I shoot cast Bullets 20 or 30 to 1 vs jacketed and I appreciate the extra bit of case support too.

Mark in GA

"The same goes for the "can't shoot lead bullets in a Glock" foolishness; most of what I shoot is cast bullets and I've found more tendency for leading in a lot of the aftermarket barrels than in factory Glock. But, the myth continues, as you'll see in pretty much every internet conversation about Glock barrels.:

Yondering,

Believe it was Glock GES.m.b.H. that started the 'Myth'.


Back to aftermarket barrels;

1.) KKM will give you much more support than the factory barrels.

2.) I find that accuracy with any barrel is highly dependent upon the load. I have loads that a KKM barrel will shoot better, and I have loads that a Glock OEM barrel will shoot better. My take===> if you are not running 45 Super or top end (book loads) 10mm loads try the Glock barrel first.

Jerry

Sort of, but the severity of it was exaggerated and blown up by "experts" who didn't understand what they were talking about, in gun magazines and then online. The warning about lead bullets from Glock was really about the soft swaged lead bullets that used to be more common; Speer and Hornady sold a lot of them for example. The same issues did not apply to harder cast bullets, but of course the warning was simplified to include all lead bullets because of the lowest common denominator principle (i.e. those who frankly just aren't smart enough to learn the difference). Then of course that warning was blown up by people online who also don't know any better, and it continues to be passed around as gospel truth, as we still see here.

Glock also says in the same manual not to shoot handloads (and so do most other factory manuals) but we don't get all worked up about that. Funny how one warning gets picked out as a big deal, and the other is completely ignored...

My G20 was unfortunately the least accurate out of several glock models I have tried. I even ran reloads through it without much success. Never had an issue with case support.

I had a G20 with a 6" Wolf barrel, had the same "case blow out" problems as reported in "regular" Block barrels. Switched to a 6' Glock barrel, had good case support with it, no more problems.

Mike

I have several brands. First, let me say that Glock barrels are generally very accurate to begin with. My main reason for aftermarket barrels has been increased velocity. I've chronographed same loads in stock Glock barrels and aftermarket barrels and get anywhere from 25-100fps increases in 10mm. I've only had one Glock were the stock barrel provided disappointing accuracy. That was a G34. It could have been the ammunition, but I tried about 10 brands and finally just gave up trying. It now has a Zev match barrel in it. For the 10mm's my favorite is Jarvis, but I don't think he makes 10mm barrels anymore. The Bar-Sto in my G40 was a semi drop-in and required some milling, but it's been very accurate. I have one KKM and one Lone Wolf. One is a 10mm to 40sw conversion and the other just a replacement barrel for a Gen2 G20. If I was opting for ultimate accuracy, I'd chose the Bar-Sto. If I was shooting soft lead rounds, I think any aftermarket cut rifling will do, and if you want reliability, stick with the stock barrel.

I believe a Bar-Sto Match would be the most accurate consistently, but it must be fitted by the gunsmith or them.