Cross-model Glock barrel buying guide. Match barrels (Agency Arms, ZEV, KKM, Faxon), threaded 1/2x28 barrels for suppressors (SilencerCo, Lone Wolf), and integrated barrel+comp systems (Radian Ramjet) ranked across G17, G19, G34, G43X, and G48 with thread, holster, and accuracy breakdowns.
The best Glock barrel for 2026 depends entirely on what you are trying to do: tighten match accuracy, run a suppressor, or flatten muzzle rise with an integrated comp system. We ranked the top barrels in each category across the G17, G19, G34, G43X, and G48, with thread, holster, and accuracy breakdowns for every pick. The Agency Arms Mid Line ($249) wins for match accuracy, the SilencerCo 1/2x28 threaded barrel ($199) is the default suppressor host, and the Radian Ramjet + Afterburner ($389) is the integrated comp benchmark.
Ranked across all Glock models and use cases. Match accuracy, threaded for suppressors, integrated comp systems, and competition-length barrels.
Best Match Barrel Overall (G19)
Best Threaded G19 Barrel for Suppressors
Best Integrated Barrel + Comp System (G19)
Best Competition (G34) Match Barrel
Best Budget Threaded G17 Barrel
Pick the barrel category first, then pick the brand. Three clean categories cover 95% of Glock barrel buyers, and they do not interchange. A threaded match barrel is not the same as a non-threaded match barrel, and an integrated comp barrel cannot host a suppressor.
Tighter chamber, better-finished bore, no threads. Buy this if you want accuracy and you do not run a suppressor or comp.
Examples: Agency Arms Mid Line, ZEV PRO Dimpled, KKM Match G34.
Price band: $185-$279.
Match-grade barrel with 1/2x28 threads at the muzzle. Buy this if you run a suppressor or a threaded compensator.
Examples: SilencerCo Threaded G19, KKM Threaded G34, Lone Wolf AlphaWolf G17.
Price band: $149-$215.
Matched barrel and comp as one unit, no threaded muzzle. Buy this for the highest tested recoil reduction without going to a threaded barrel + comp setup.
Examples: Radian Ramjet + Afterburner (G17, G19, G43X, G48).
Price band: $389-$419.
Verdict: If you already plan to run a 9mm can, default to a threaded match barrel like the SilencerCo G19 ($199). If you want pure accuracy and you carry, get a non-threaded match barrel and skip the holster headache. If you are after a flatter dot for competition or range use and you do not want a stand-alone comp, the Radian Ramjet system is the only barrel-level integrated comp worth buying. Gen 6 owners: every barrel in this guide is Gen 3-5 only. Gen 6 barrels require Gen 6-specific SKUs that have not yet shipped, see the Gen 6 callout below.
Tighter chambers and better-finished bores than the factory cold-hammer-forged Glock barrel. Non-threaded options keep the gun in stock holsters and avoid the legal/holster overhead of a threaded muzzle.
Top Pick (G19)
Best Aesthetic + Accuracy (G19)
Best Value Match (G19)
Top Pick (G34 Competition)
Best Value (G34)
Budget Pick (G34)
1/2x28 is the US 9mm suppressor standard. Every barrel here drops in, threads cleanly, and runs the most common 9mm cans (Banish, Omega, Octane, Obsidian) without an adapter.
Top Pick (G19)
Top Pick (G17)
Best Budget (G17)
Top Pick (G34 / Competition Comp Host)
Top Pick (G43 / G43X / G48)
Matched barrel and compensator packages with no threaded muzzle. Best bore alignment available, the highest tested recoil reduction on a Glock, and 50-state legal because there is no threaded muzzle.
Top Pick (G19 Gen 5)
Top Pick (G19 / G45 Gen 6)
Top Pick (G17 Gen 5)
Top Pick (G48 Slimline)
Top Pick (G43X Slimline)
Glock barrels are model-specific. The chart below shows what fits each common Glock and the upgrade path that gives the best return for that platform.
| Model | Length | Best Match | Best Threaded | Best Comp System |
|---|---|---|---|---|
| G17 (Gen 3-5) | 4.49" | Faxon Match G17 | SilencerCo Threaded G17 | Radian Ramjet G17 (Gen 5) |
| G19 / G45 (Gen 6) | 4.02" | Factory Marksman (no AM yet) | Factory only (Glock Gen 6 threaded TBA) | Radian RAMJET + AFTERBURNER Gen 6 ($390) |
| G17 (Gen 6) | 4.49" | Factory Marksman (no AM yet) | Factory only (Gen 6 threaded TBA) | Radian Gen 6 G17 variant on roadmap |
| G19 (Gen 3-5) | 4.02" | Agency Arms Mid Line | SilencerCo Threaded G19 | Radian Ramjet G19 |
| G19X / G45 | 4.02" | Agency Arms Mid Line G19 | SilencerCo Threaded G19 | Radian Ramjet G19 |
| G26 | 3.43" | G26-specific OEM (no AM match standout) | SilencerCo Threaded G26 / Lone Wolf | N/A |
| G34 | 5.31" | KKM Match G34 | KKM Threaded G34 | Stand-alone comp on KKM threaded |
| G43X / G48 | 3.41" / 4.17" | No drop-in AM match (OEM is the bar) | SilencerCo Threaded G43/43X/48 | Radian Ramjet G43X / G48 |
Use the rifle and pistol builder to see compatible barrels and accessories filtered to your exact Glock. The compact-frame G19, G19X, and G45 share the same 4.02-inch barrel envelope, which is why a G19 aftermarket barrel drops into all three. The G43X and G48 share aftermarket threaded SKUs but have different OAL, the SilencerCo threaded barrel is the only single SKU that covers all three slimline frames.
Gen 5 barrels do not fit Gen 6 slides, and Gen 6 barrels do not fit Gen 5 slides. Gen 6 G17 and G19 frames added a tab the barrel must clear, plus revised barrel geometry. Radian explicitly warns that the Gen 5 RAMJET + AFTERBURNER must never be installed on a Gen 6 platform.
Aftermarket Gen 6 today: Radian shipped a Gen 6-specific RAMJET + AFTERBURNER for the G19 and G45 in February 2026 ($389.95, threadless integrated barrel + comp, hardened 416R stainless with Radianite coating). A Gen 6 G17 variant is on the roadmap. As of April 2026 it is the only major aftermarket Gen 6 Glock barrel shipping. Match and threaded Gen 6 SKUs from Agency Arms, KKM, Faxon, ZEV, Lone Wolf, and SilencerCo are not yet on shelves.
If you do not run the Radian system: stay on the factory Glock Marksman barrel until the threaded and match aftermarket SKUs ship. Glock has confirmed an official Gen 6 threaded factory barrel is in development. Most non-barrel parts (magazines, slide accessories, sights) carry over from Gen 5 with verification, but recoil spring assemblies are revised. See our Gen 5 vs Gen 6 guide for the full parts compatibility matrix.
A match barrel will tighten your groups. It will not turn your Glock into a 1911 Wilson Combat. The honest accuracy delta from factory CHF Glock barrel to a quality match barrel (Agency, KKM, ZEV) is roughly 0.5 to 1.5 inches at 25 yards with consistent ammo, measured from a rest with the shooter taken out of the equation.
When the barrel matters: bullseye shooting at 25-50 yards, USPSA Production scoring where every C-zone hit costs points, and any time you are shooting from a rest. Match barrels also feed cast lead competition bullets that the polygonal factory bore is not rated for, which is why KKM Match G34 dominates USPSA Production loadouts.
When it does not matter: inside 15 yards, on a timer, or with an unsupported draw. The shooter and the trigger pull are the limiting factors well before the barrel is. If you are shooting 4-inch groups at 15 yards offhand with the factory barrel, the same match barrel will give you 4-inch groups at 15 yards offhand. Spend on a trigger, sights, or training before a match barrel if combat accuracy is the goal.
The only threaded Glock barrel pitch worth considering is 1/2x28. Every common 9mm suppressor and compensator on the US market is cut for it. Avoid M13.5x1 LH (the European pitch) on a Glock unless you specifically own a European-spec can, because all of the common pistol cans (Banish, Omega 9K, Octane, Obsidian, Osprey 9) ship 1/2x28.
Holster impact: A threaded barrel adds 0.5 to 0.7 inches of OAL past the slide. Most stock G19/G17 holsters cut tight to the muzzle will not fit. Look for "threaded barrel" or "compensator-cut" SKUs from T.Rex Arms, PHLster, Tier 1 Concealed, and Legacy Firearms. The same holster will usually fit the same Glock with a stock-length barrel, so buying a threaded-barrel holster is a one-way decision that does not lock you out of going back.
Suppressor-height sights: A 9mm can will block the factory front sight. Plan to add suppressor-height irons (Trijicon HD XR, Ameriglo GL-429, Night Fision) that co-witness over the can or under your red dot. This is a $80-150 line item beyond the barrel cost. Our Glock 19 upgrades guide covers the full sight setup for a suppressed G19.
Glock's factory warranty does not cover damage caused by aftermarket parts, but it does not void the rest of the pistol. If a non-Glock barrel cracks the slide, that is not covered. If the same gun has an unrelated extractor or slide stop issue, Glock will still service it. Duty users and self-defense carriers should keep the factory barrel installed and run the aftermarket barrel only at the range.
Run 200-500 rounds through a new aftermarket barrel before trusting it for anything serious. Match chambers (Agency, KKM) are tight on purpose and want to settle in. Threaded barrels need that round count to verify thread alignment under suppressor or comp gas pressure. Ramjet systems settle in faster, the matched interface is less sensitive than threads, but still budget 200 rounds before signing off.
Match chambers are tighter than the factory chamber, so they care more about ammo consistency. Brass-cased 124gr NATO and 124gr +P feed reliably across every match barrel on this list. Steel case (Tula, Wolf) and undersized handloads can short-stroke a tight chamber, especially during break-in. Comp barrels (Radian Ramjet) are more sensitive to load weight, the system is tuned for 124gr and will tolerate 115gr but loses some recoil reduction benefit on lighter loads.
Match barrels are lapped, not polygonal-rifled, so they accumulate carbon faster than the factory bore. Plan to brush the bore every 300-500 rounds. Comped barrels need the comp ports cleared at the same interval, carbon buildup measurably reduces gas redirection.
A barrel is one piece of a Glock build. These guides cover the rest of the high-impact upgrade categories.
Essential accessories to round out your setup
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