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7 Best Aftermarket Glock Barrels [Hands-On]

A Glock is simply one of the most balanced pistols out there.  

You know exactly what you’re getting when you purchase a Glock: a dependable weapon that’s easy to shoot but not always the most comfortable to hold.

All Tested Glock Triggers
A Couple of Glocks

Yes, I know that Glocks attract almost as many haters as they do diehard followers…but they’re good guns, especially if you’re a noob looking to get comfortable shooting a handgun for the first time.

Another reason why I think owning a Glock is a must for every shooter is the gun’s customizability.  

Thanks to Glock’s popularity, they’re one of the easiest pistols to upgrade and modify.  Since Glocks come finely tuned fresh out of the box, you wouldn’t need to upgrade one to improve performance.  Still, it’s nice to have the option to customize your Glock if need be.

Fieldstripped Glock 17
Fieldstripped Glock 17

Today we’re going to look at some aftermarket Glock barrels that can boost the accuracy and performance of your already awesome gun.

Why Get a Replacement Barrel?

Since Glocks are known for their unparalleled quality, the idea of spending money on an aftermarket barrel might seem strange.  After all, Glock has carefully designed all their working parts to provide maximum performance.

And while Glock’s reputation for top performance is well earned, their barrels do have one limitation: lead bullets.  

Like Glock, a handful of other companies also use polygonal rifling.  However, Glock is the only manufacturer that warns against shooting lead bullets, as it could cause a buildup when paired with this type of rifling which the company warns could lead to safety hazards

Conventional rifling (left) and polygonal rifling (right)
Conventional rifling (left) and polygonal rifling (right)

Most shooters looking for an aftermarket Glock barrel aren’t doing it for the sole reason of shooting unjacketed rounds.  

While lead ammo is a nice perk to having an aftermarket barrel more often than not, people interested in replacement barrels for their Glock are more concerned with competition grade barrels that can help them increase their accuracy when squeezing off rounds.  

Many competitive swear by these match grade aftermarket Glock barrels when using premium ammunition.

Assorted range of barrels by KKM
Assorted range of barrels by KKM

Furthermore, the general consensus is that average quality ammo tends to fire better in an OEM barrel than an aftermarket one.  So make sure to keep that in mind when deciding whether you want to swap out your Glock barrel or not.

Without further ado, let’s take a look at some popular aftermarket barrels that can upgrade the accuracy of your Glock.

1. Faxon

Faxon is new to the Glock world, but their AR-15 BarrelsHandguards, and Bolt Carrier Groups have been impressing us for a while.

The Full Review really brakes down what we think of Faxon’s Glock barrels, bottom line: they’re awesome. Earning a sold 5/5 rating from us in reliability, accuracy, looks, and value.

We highly recommend them.

TiN and Chamelon Faxon Barrels
TiN and Chamelon Faxon Barrels

Oh…and there’s also some really awesome coatings.

Pretty & Accurate Barrel
at Faxon

Prices accurate at time of writing

Prices accurate at time of writing

What’s your take?

Readers' Ratings

4.96/5 (570)

Your Rating?

2. Victory First

If your wallet is light, Victory might be right for you. A decent barrel for a great price, Brownells has you covered.

Victory First Glock Barrel
Victory First Glock Barrel

Available for the Glock 17, 19, and 43 in both threaded and standard with all of them finished in Black Nitride it is easy to find a barrel that fits your needs.

We tested a G17 Victory First barrel with several types of ammo at 10 yards.

Victory First Tested Ammo
Victory First Tested Ammo

Not too shabby…especially for the most affordable barrel in this whole article.  It seemed to like my plinking Blazer 124gr and American Eagle 115gr.

Victory First G17 Barrel Test
Victory First G17 Barrel Test
Best Budget Barrel
at Brownells

Prices accurate at time of writing

Prices accurate at time of writing

3. Grey Ghost Precision

We did an In-Depth Review of this slide/barrel combo that you should totally read.  But the bottom line is, the barrel is awesome.  The slide is awesome.

Grey Ghost Precision G19 V2 and G17 Type V1
Grey Ghost Precision G19 V2 and G17 Type V1

And they both fit together amazingly.

One of the best things about Grey Ghost is the number of options you have.

Threaded barrel, non-threaded, RMR cut, non-RMR cut, complete slide with Barrel, stripped slide with no barrel or just the barrel – every one of these options is available to you for both the Glock 19 and the Glock 17.

Best Overall Upgrade
at Aero Precision

Prices accurate at time of writing

Prices accurate at time of writing

4. Lone Wolf

Lone Wolf has earned the reputation of being the leading manufacturer of aftermarket Glock accessories in the industry.  They are the company that made it possible to rebuild a Glock completely with third-party parts, after all.  

Glock with Lone Wolf ported extended barrel
Glock with Lone Wolf ported extended barrel

While it should come as no surprise that Lone Wolf makes their own Glock barrels as well, you might be interested to know that they don’t just produce OEM replicas – they also make completely unique barrels that stand out from their factory counterparts.

9” extended barrel for Glock17
9” Extended Barrel for Glock17

Lone Wolf’s line of Alpha Wolf barrels let the shooter have more control over their gun’s operation.  One of the chief differences between Alpha Wolf and Glock OEM barrels is the option of barrel threading, which is something that Glock simply doesn’t do.  And if you’re planning on mounting a suppressor, not having a threaded barrel can turn a simple attachment into the world’s largest headache.  

Fortunately, Alpha Wolf saves the day with their line of threaded barrels for most Glock models.

Lone Wolf’s barrels also ditch the hex / polygonal rifling for traditional rifling.  

The benefit of this is that you’re able to shoot lead ammo with a Lone Wolf barrel without worrying about the dangerous buildup of deposits which Glock warns against with their factory barrels.  But this convenience and increased savings on ammo come with a price, as the consistency and precision associated with Glock’s advanced rifling pattern are also negated.  

The Original Upgrade Barrel
at Lone Wolf

Prices accurate at time of writing

Prices accurate at time of writing

Still, unless you’re shooting in a 3Gun competition or similar, you probably won’t notice that much of a difference between your OEM barrel and Alpha Wolf variant.

The coolest thing about Lone Wolf’s barrels isn’t the threading or the extended length barrels, it’s the conversion kits.  Lone Wolf has a number of different barrels that converts various Glock models from one caliber to another.  These make it easy to turn your G35 into a .357, your G29 into a .40S&W, and so on.

Highlights from Lone Wolf

5. KKM Precision

KKM is one of the leading manufacturers of match grade drop-in Glock barrels.  Designed for competition shooting, KKM’s barrels are a popular choice for Glock owners looking to gain a competitive edge with their accuracy.  Additionally, KKM barrels are also great for shooting non-jacketed bullets as well, which is perfect for anyone who has a surplus of lead ammo they’d like to get rid of.

“The Roland Special Barrel” for the Glock 19
“The Roland Special Barrel” for the Glock 19

You’ll find that a large portion of the Glock owners shooting with KKM barrels belong to 3Gun crowds.  This is because KKM barrels are known to improve accuracy thanks to their button rifling which irons the rifling pattern into the barrel rather than cuts it.  That, and the fact that KKM barrels increase tightness in the chamber is said to give competitive shooters a slight advantage over OEM barrels.

Overall, KKM’s button rifling is great because it gives you the opportunity to shoot with cheaper bullets than your standard factory Glock barrel.  And while you’ll have no problem shooting reloads with a KKM barrel, you won’t get the same level of reliability and consistency that’s comes from Glock’s hex rifled barrels unless you’re shooting premium match quality rounds.  

Threaded Glock 17 Match Barrel
Threaded Glock 17 Match Barrel

If you’re looking to add a KMM barrel to that Glock that you use for home defense, you might want to reconsider.  Your factory barrel will be more dependable when squeezing off run-of-the-mill ammo in a pinch.  But if you’re trying to improve your accuracy in a competitive setting where you’re using only high-quality loads, KKM can do wonders for your grouping.

Highlights from KKM Precision:

6. Zev Technologies

If you know a thing or two about modding Glocks, chances are, you’re already familiar with Zev due to the fact that they make some of the coolest slides and most responsive triggers for Glock models.   

Zev Barrels
Zev Barrels Are Known for Their Flashy Appearances

Zev barrels don’t just come in pretty colors like bronze and stainless steel so that your Glock looks as menacing as it shoots.  They’re also made with a match grade steel that’s not only resilient but able to withstand excessive pressure from shooting with a suppressor.  Many also come with the option of being threaded as well, making it simple to mount a suppressor if you’ve got one.

Another advantage that comes with shooting with a Zev barrel is increased versatility.  While Glock’s OEM barrel is perfect in almost every way, it restricts the shooter to FMJ rounds.  But with Zev’s upgraded (and ostentatious) barrel, you’re also able to shoot less expensive lead rounds dependably and safely.  

Most Corrosion Resistant/Best Suppressed
at Brownells

Prices accurate at time of writing

Prices accurate at time of writing

But the best quality about Zev barrels isn’t their flashy appearance or ability to spit out lead bullets, it’s the improved durability that comes with the pre-hardened stainless steel barrel.  It might be hard to fathom how a company could improve the durability of Glock’s already pristine parts, but Zev somehow manages to do this by designing a barrel with improved resistance against friction and corrosion.  

And as an added bonus, all of Zev’s barrels are drop-in barrels, so you don’t need any gunsmithing expertise when swapping out your OEM barrel.

at Rainier Arms

Prices accurate at time of writing

Prices accurate at time of writing

Highlights from Zev Technologies:

7. Killer Innovations

The new kid on the block is Killer Innovations.

Their claim to fame is their single point cutting system for their rifling which is more precise.

Killer Innovations Glock Barrel
Killer Innovations Glock Barrel

We ran in through a couple builds and also shot different types of ammo at 10 yards.

Killer Innovations Tested Ammo
Killer Innovations Tested Ammo

Quite good for the compact G19 barrel and frame!

Killer Innovations G19 Barrel Test
Killer Innovations G19 Barrel Test

Check it out if you like a different pattern of the exposed barrel…plus if you value accuracy above all.

at Rainier Arms

Prices accurate at time of writing

Prices accurate at time of writing

Build the Right Glock for You

Glock markets itself as perfection straight out of the box.  

And if you can get past the blocky handle of pre-gen4 models, they really are almost perfect.  But that doesn’t mean that you can’t take an already optimal design and tweak it to suit your sensibilities!

Chameleon Faxon Barrel
Chameleon Faxon Barrel

Switching the barrel is just one of many things that you can to do turn your Glock into something that accurately reflects you.  

Pair up your new barrel with one of our favs in Best Glock Slides.  Or if you want to swap out even more stuff…check out our Best Glock Upgrades.

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35 Leave a Reply

  • Jonathan

    I have a threaded Faxon barrel for my G43X. 20% to 30% failure to feeds. Had ramp polished out to a mirror. Still happens. Most disappointing $210 I have ever spent. Going back to stock barrel for carry. I won't even try to sell this piece of garbage to someone to recoup some loses, wouldn't be ethical.

    August 29, 2021 9:40 am
  • Stan

    What about “Agency Arms” barrels ? Reviewers like “Tactical Toolbox” and a lot of other reviewers swear by them and don’t trust anything else. Why wasn’t Agency Arms barrels on your list ?

    July 16, 2021 6:21 pm
  • Sigfried Von Glockenspiel

    RE: KKM and button rifling - I'm a fan of KKM but button rifling is neither more (inherently) accurate than cut rifling, nor is it a KKM exclusive. In fact, I'd love to know who is producing cut rifled barrels for Glocks, as most aftermarket manufacturers are button rifling.

    You can produce an incredibly accurate barrel using either method, you can also produce an inaccurate barrel using either method. It's not the rifling method that determines an accurate barrel, but the manufacturer's total process. Manufacturing a button rifled barrel is faster and less complex than manufacturing a single-point cut-rifled barrel, that's it's main advantage. Cut rifling can produce a smoother finish (cutting versus tearing) which equates to less copper fouling (and less barrel break-in needed on precision rifles). Cut rifled barrels also tend to have a lower transition period from good to worn out, whereas button rifled barrels tend to degrade more abruptly when they start to open up.

    And if anyone's interested, there are at least three other methods of rifling: Broached, Hammer Forged, and ECM.

    May 23, 2021 10:01 pm
  • Patrick Rutherford

    Hi there. My name is Patrick Rutherford. I’m looking for a lead Bullet barrel in the $100 price range. I have a Gen 1 glock 17. I don’t need irridescent colors. . Just a simple barrel

    November 14, 2020 10:17 am
  • David Petroski

    Do you have any knowledge of the Glock Store Double Diamond barrels? I am looking for a barrel for a glock 20.

    May 11, 2020 1:37 pm
    • hardy

      My experience with Double Diamond Barrels is they dont fit some Slides out of the box.

      August 31, 2020 5:20 pm


    March 17, 2020 10:26 am
    • Sarge


      March 31, 2020 4:06 pm
  • Wilbur

    Why wasn't the double diamond barrel from the glock store mention in the review of after market barrels for the glock.

    January 11, 2020 12:26 pm
    • hardy

      My experience with Double Diamond Barrels is they dont fit some Slides out of the box.
      I got a Stainless 9mm for my G-17 and it wouldnt fit. I had to do some filing to get it right. A lot of filing and fitting. I was taking a risk because it voided the warranty I'm sure. I had waited the better part of a month so I had at it. Other Barrels have not had this problem at all.

      August 31, 2020 5:17 pm
  • Steve Eisenberg

    I'm going to use a "killer" barrel with "R.I.P." ammunition. I'm sure no prosecutor would ever try to use it against me.

    December 23, 2019 10:23 am
    • Mike

      Who cares if they did. You would never get convicted! Don't be so dumb!

      May 10, 2020 8:18 pm
  • Otto scherr

    I’m looking for a threaded barrel from gen 4 10 mm glock

    November 7, 2019 1:28 pm
  • Jeffrey Williams

    1. I Shoot a Zev and Wheaton on my 17. A L2D on my 19. All 3 shoot great, don't jam Etc. I shoot a KKM on my 40 Cal Glock. Aftermarket barrels give me more consistency for some reason. 2. Moving to a 147 grain 9mm round tightened up my groups. " Winchester Train and Defend"
    3. Corrected my "Left" & " Little Low" by sliding my grip clockwise. This lead to my trigger finger pulling straight back.

    September 4, 2019 1:40 pm
  • KkmCrackSmoker

    I bought a KKM barrel, put Coreboy in the front of it, and smoked crack out of it, and it still shot great!

    July 28, 2019 6:42 am
    • SnarlzBarkley

      Good to know. I plan on using my Glock to shotgun [see: the movie Platoon] every substance I can find. These are the reviews that matter. Than you for doing the Lord's work.

      January 23, 2020 3:36 pm
      • ThorholosunofOdin

        I'm glad I'm not the only one that enjoys the finer things in life. Hopefully I'll be drinking Claws through my Glock within a week.

        January 31, 2020 7:37 am
  • zorba

    Another good Glock or Polymer 80 barrel is from Heavy Armor Division. They'll even engrave your bbl for FREE! No relationship with them other than as a satisfied customer.

    March 20, 2019 11:59 pm
  • Woody Rosenscein

    Any feed back on Bear Creak Arsenal? $50 barrels. I saw some videos that it provides OEM accuracy. A threaded barrel for $50 is a great price if it lasts and provides good accuracy.

    January 18, 2019 7:52 am
    • Kenneth H

      After my experience with a .458 Socom BCA complete upper, I'd steer clear of them. They seem to have a lot of QC issues. Thankfully they were easy to work with on the return and refund.

      March 3, 2019 2:44 am

    I'BE HAD 2 KKM BARRELS ON A GLOCK 26 , and both shot high . After that I put the factory barrel back in , and was hitting point of aim . Could you please tell me what was going on there ?

    September 13, 2018 2:51 pm
    • David L

      That would be something you'd have to talk to KKM about, sorry.

      September 13, 2018 3:00 pm
  • Mike

    You forgot to mention Bar-sto barrels

    June 15, 2018 7:22 am
  • Derek D Jones

    As I have been looking a caliber conversations, no one comes right out and admits that the bolt face on the slide has to match the case? I'm sure a ,357 sig. will work in a 40 S&W slide, but there isn't any way to use 9 mm in say a Glock 22 or 23? Am I correct or not?

    May 27, 2018 6:13 pm
    • Revolverdude

      You can buy a 9mm conversion barrel for a Glock 22 or 23. You can go down in caliber but not up.

      August 10, 2018 3:57 pm
      • Gun_Writer

        @Revolverdude : "You can buy a 9mm conversion barrel for a Glock 22 or 23. You can go down in caliber but not up."

        Not necessarily. The only conversion Glock recommends is .357 SIG and .40 S&W. As for the G22/23 conversion of G17/G19... The G22 was originally built on the G17 frame, and with the higher pressures of the .40, they were taking a battering, which lead to some pre-mature wear issues. With the Gen4, the G17 was built on the G22 frame, so stepping down from a .40 to a 9mm would be safe (though not recommended), HOWEVER, you could see some reliability issues if you try to do this with a pre-Gen4 gun. The extractor on a pre-Gen4 G22 isn't long enough to reliably grab the case of the 9mm. The Gen4 extractor is overbuilt, so it grabs the .40 case more aggressively, which means it will still reliably (more or less) grade a 9mm case. (NOTE: As of the date on this post, Glock goes not have a .40 Gen5, and most likely won't, so it's not applicable to Gen5).

        February 28, 2019 4:51 pm
        • joao

          A glock desenvolveu sim a g22 gen 5 para a polícia militar de sao paulo/brazil

          April 5, 2019 9:31 am
  • Mike

    The article about KKM barrels being less reliable than the OEM barrel is total BS. I put a KKM barrel in a new unfired G20 for using Buffalo Bore hard cast ammo for hiking. I bought a 500 round case of Remington range ammo to break the pistol in before carrying it. 500 rounds without a single failure to feed, fire or extract.

    May 21, 2018 5:50 am
    • Bob Hope

      “Failure to feed, fire, or extract.”
      None of which are barrel related. Cool story.

      December 28, 2019 2:45 pm
  • Ari

    I have a Barsto .40- 9mm drop in conversion for my G23C. Since I primarily shoot crap reloads I don't notice much difference BUT they are the only company that offers a barrel with porting in the factory location, For my G27 I have KKM .40-9mm drop in and don't notice much there either.

    March 16, 2018 9:28 pm
  • thechad

    I like a lot of what ZEV is putting out....but they do not put out anything for the Glock 23.

    March 7, 2018 2:41 pm
    • Mel

      Good evening. As of right now. I bought a black list barrel for my g23. Because I will be carrying a buffalo bore 40+p for self defense. cannot do it with oem barrels. alpha wolf g23 barrels are hit and miss. My friends alpha wolf needs the feed ramp polished. It cannot feed hp and had ftf.

      April 13, 2018 7:32 pm
    • That’s the problem their barrels are top notch and they make nothing for the .40 this just blows my mind !

      April 15, 2018 7:51 pm
  • Kopfjager

    Good, solid information regarding a trusted "go-to" pistol. I note that you don't have space to address every aftermarket barrel available, but Storm Lake didn't make the shortlist. Any opinions? I placed one of SL's barrels 5.30" w/ ports in a G-21 just the other day. I found it to be as close to "airtight" as a drop-in could be without smithing my gun. Good looks, good price. Haven't shot it as of yet, but it seems to be a good choice. Will I be wishing I went with KMM or Zev?

    January 4, 2018 12:13 pm
    • Kopfjager

      I also put money into the SL 5.3 w/porting on my Glock 21. Even though Iv trusted Zev with many parts for several firearms, I'm very happy with the results found in Storm Lake. All fit, function and looks pleased me so much it gave me the desire to continue improving on this 21 and Ill say that I'm again enjoying shooting it once again.

      March 17, 2018 5:02 am