Best Glock compensators for the Glock 19, 17, 19X, 45, 26, 34, 47, and 49: non-threaded barrel+comp systems and thread-on comps ranked, with Gen 3 through Gen 6 fitment and threaded barrel limits.
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The best Glock 19 compensator is the Radian RAMJET + AFTERBURNER, a matched barrel and comp with no muzzle threads, sold in separate Glock 19 Gen 3, Gen 4, and Gen 5 versions. The Gen 5 unit also fits the Glock 19X and Glock 45, and a separate Gen 6 unit covers the Glock 19 and 45 Gen 6. The same logic runs through the rest of the 9mm lineup: every Glock compensator here is cut for specific models and generations. Radian's Glock 17 unit covers the G17 plus the Gen 5 G47 and G49, and the Herrington Arms HC9C 3.0 covers the most generations of any thread-on comp here: the G17 and G19 from Gen 3 through Gen 6, the G26 and G34 from Gen 3 through Gen 5, the Gen 5 G19X, and the G45 in Gen 5 and Gen 6.
Buy the Radian RAMJET + AFTERBURNER cut for your pistol. The Gen 5 Glock 19 system ($389.95) also fits the Glock 19X and Glock 45, and the Gen 5 Glock 17 system ($389.95) also fits the Glock 47 and Glock 49. Radian sells separate Gen 3 and Gen 4 units for both, shown in the fitment section. The Gen 6 unit ($389.95) covers the Glock 19 and Glock 45 Gen 6. Radian measures up to 44% recoil reduction with 115gr on the Glock 19 unit. The bigger gain is that the timing step goes away.
A thread-on comp only works when its ports finish pointing straight up, and 1/2x28 threads stop wherever they stop. So the comp has to be clocked by hand and then held there. Herrington holds the HC9C and HC95 V2 with a single set screw, Loctite 243 on the barrel and screw threads, and a 24 to 48 hour cure before you shoot. Agency Arms clamps the 417 with two set screws and threadlocker. PMM times its Duty comp with a shim stack and Loctite 272. If a comp has already rotated off index on your pistol and started venting sideways, the RAMJET removes that step.
The RAMJET + AFTERBURNER has no muzzle threads. The AFTERBURNER slides over Radian's RAMJET barrel, and a tapered locking screw engages an angled V-groove machined into the underside of that barrel, timing the comp as it locks down onto the upper barrel profile. The screw has a spec, 15 inch-pounds, and there are no shims and no threadlocker. What it does not have is a clocking step: the groove decides where the comp stops, so the ports finish pointing up. You are also buying the barrel, which closes most of the price gap against a threaded barrel plus a comp. The slimline Glock 43X unit locks the same way, and in our 500-round test on that gun it ran the whole session on the factory recoil spring with zero malfunctions.
Two caveats. Radian makes no Glock 17 Gen 6, Glock 26, or Glock 34 unit, and the Gen 5 system does not fit a Gen 6 pistol. Those owners start with the Herrington HC9C, or the PMM barrel-and-compensator combo on a Glock 26. Second, the RAMJET is not suppressor-ready: if the same barrel has to host a can, buy a threaded barrel and a thread-on comp instead.
The matched barrel-and-comp systems lead because they need no threaded barrel; the thread-on comps follow.
Best integrated system for the Gen 5 G19, G19X, and G45
Best integrated system for the Gen 5 G17, G47, and G49
Best integrated Gen 6 system for the G19 and G45
Broadest maker-matched barrel and compensator family
Best thread-on generation coverage
Best thread-on G47 and Gen 6 option
Best no-set-screw standalone compensator
Best non-threaded value for the G19
Best non-threaded value for the G17
Best Gen 5 custom-build option
Best custom-build option for G17, G19, and G34 Gen 3/4
Best locking-ring option for model-specific Glock builds
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Four more options fit specific Glock 19 buyers: the Tyrant T-Comp ($80.96) for a thread-on comp with no set screws, the Griffin Armament Micro Carry Comp ($61.05) for the smallest profile, the Arc Division Sparc V2 ($81.99) for a 0.8 oz generation-cut comp, and the ZEV Combat Hypercomp Slide Kit ($999) for a Gen 3 Glock 19 that should be ported with nothing on the muzzle.
Tyrant T-Comp: buy the T-Comp cut for your generation, Gen 3, Gen 4, or Gen 5, and run it on a 1/2x28 threaded 9mm Glock barrel. The two-piece body clamps down with the included 16mm wrench, with no set screws, no shims, and no timing step.
Griffin Armament Micro Carry Comp: a 1/2x28 muzzle device with no slide contour, so buy it to the barrel: it needs a 1/2x28 threaded 9mm barrel. It self-indexes on the barrel shoulder and torques down on wrench flats with no set screws, and at 0.69 inch wide it is barely larger than a thread protector.
Arc Division Sparc V2: a generation-specific double top port comp for large-frame 9mm Glocks, so order the generation that matches your pistol. It is 7075 aluminum at 0.8 oz, and its set screws wedge onto the barrel rather than the threads, installed with red Loctite.
ZEV Combat Hypercomp Slide Kit: Glock 19 Gen 3 and ZEV OZ9c only. It is a complete ported top end rather than a muzzle device: slide, ported barrel, recoil assembly, sights, and upper parts, with the porting machined into the slide and barrel. Nothing hangs off the muzzle, so there is no comp to time and no added length.
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The Glock 19 and Glock 17 take the most compensators on this page from Gen 3 through Gen 5, the Glock 34 is thread-on only, and Gen 6 narrows to Radian and Herrington. Buy to the maker's model and generation list: a shared barrel length and a shared 1/2x28 thread do not establish fitment, because makers contour comps to a slide profile and generation, and Killer Innovations states its comps cannot be used interchangeably between models.
| Model | Gen 3 | Gen 4 | Gen 5 | Gen 6 | Threaded barrel path |
|---|---|---|---|---|---|
| Glock 19 | Radian G19 Gen 3, PMM combo, HC9C, PMM Duty, Mass Driver G19, Agency 417 Gen 3/4, Velocity | Radian G19 Gen 4, PMM combo, HC9C, HC95 V2, PMM Duty, Mass Driver G19, Agency 417 Gen 3/4, Velocity | Radian G19 Gen 5, PMM combo, HC9C, HC95 V2, PMM Duty, Mass Driver G19, Agency 417 Gen 5, Velocity | Radian Gen 6, HC9C, HC95 V2 | True Precision G19 (Gen 3-5); NDZ Gen 6 (Gen 6) |
| Glock 19X | Not made | Not made | Radian G19 Gen 5, PMM combo, HC9C, HC95 V2, PMM Duty, Agency 417 Gen 5, Velocity | Not made | True Precision G19/19X/45 |
| Glock 45 | Not made | Not made | Radian G19 Gen 5, PMM combo, HC9C, HC95 V2, PMM Duty, Agency 417 Gen 5, Velocity | Radian Gen 6, HC9C, HC95 V2 | True Precision G19/19X/45 (Gen 5); NDZ Gen 6 (Gen 6) |
| Glock 17 | Radian G17 Gen 3, PMM combo, HC9C, PMM Duty, Mass Driver G17, Agency 417 Gen 3/4, Velocity | Radian G17 Gen 4, PMM combo, HC9C, HC95 V2, PMM Duty, Mass Driver G17, Agency 417 Gen 3/4, Velocity | Radian G17 Gen 5, PMM combo, HC9C, HC95 V2, PMM Duty, Mass Driver G17, Agency 417 Gen 5, Velocity | HC9C, HC95 V2 | True Precision G17 (Gen 3-4); Griffin ATM G17 Gen 5 (Gen 5); a Gen 6 G17 barrel (Gen 6) |
| Glock 47 | Not made | Not made | Radian G17 Gen 5, PMM combo, HC95 V2, PMM Duty | Not made | Matched Radian G17 or PMM combo |
| Glock 49 | Not made | Not made | Radian G17 Gen 5, PMM combo, PMM Duty | Not sold in the US | Matched Radian G17 or PMM combo |
| Glock 26 | PMM combo, HC9C, PMM Duty | PMM combo, HC9C, HC95 V2, PMM Duty | PMM combo, HC9C, HC95 V2, PMM Duty | Not made | True Precision G26 (Gen 3-5) |
| Glock 34 | HC9C, Agency 417 Gen 3/4 | HC9C, HC95 V2, PMM Duty, Agency 417 Gen 3/4 | HC9C, HC95 V2, PMM Duty, Agency 417 Gen 5 | Not made | A G34 barrel off the exclusion list (Herrington excludes KKM; Agency excludes Faxon) |
Radian G19 and G17 cells name the generation-specific RAMJET + AFTERBURNER unit for that barrel length; "Not made" means Glock does not build that model in that generation. The Tyrant T-Comp and Arc Division Sparc V2 are sold by generation, the Griffin Micro Carry Comp by thread, and the ZEV Hypercomp kit fits the Glock 19 Gen 3 only.
Radian's Gen 3 and Gen 4 systems are separate part numbers from the Gen 5 units ranked above, and none of them cross generations. Buy the one cut for your pistol:
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The Glock 19 takes more of the compensators on this page than any other Glock. On Gen 3 through Gen 5, the Radian RAMJET + AFTERBURNER is the pick in its generation-specific version, and the Strike Industries Mass Driver ($95.95) is the non-threaded value option that runs on the factory barrel. On a Gen 3 or Gen 4 Glock 19, buy the Agency Arms 417 Gen 3/4 version ($110) rather than the Gen 5 417 ($110). On Gen 6, the choices narrow to the Radian Gen 6 unit and the two Herrington comps, the HC9C ($71.99) and HC95 V2 ($99.99), on a Gen 6 threaded barrel. The Glock Gen 5 vs Gen 6 comparison covers what else changed on the Gen 6 slide, and the Glock 19 upgrades guide covers the triggers, optics, and plates that pair with a comp.
The Glock 19X and Glock 45 buy off the Glock 19 list, because both pair a full-size grip frame with the Glock 19 slide and 4.02 inch barrel. Radian's Gen 5 Glock 19 unit covers both, and the PMM combo, Herrington HC9C and HC95 V2, PMM Duty ($100), Agency Arms 417 Gen 5, and Killer Innovations Velocity ($104.49) all list the 19X and the 45 by name. The Glock 45 Gen 6 takes the Radian Gen 6 unit or either Herrington comp. The Strike Industries Mass Driver is not listed for either model. More G45 parts are in the Glock 45 upgrades guide.
The Glock 17, 47, and 49 share the Glock 17 slide and 4.49 inch barrel, so they buy off the Glock 17 list regardless of grip size. On the G17 Gen 3 through Gen 5, the Radian Glock 17 unit leads, and the Strike Industries Mass Driver for Glock 17 ($95.95) is the non-threaded option. Radian, PMM, and Strike Industries make no Glock 17 Gen 6 unit: the Herrington HC9C and HC95 V2 are the listed comps, and they need a threaded barrel cut for the Gen 6 Glock 17, since earlier Glock 17 barrels do not fit the Gen 6. For the Glock 47 and Glock 49, buy a matched system: the Radian Glock 17 unit or the PMM barrel-and-compensator combo ($280), both listed for the Gen 5 G47 and G49. The PMM Duty lists both models too, and the Herrington HC95 V2 lists the G47. Full-size builds continue in the Glock 17 upgrades guide.
The PMM barrel-and-compensator combo is the matched system for the Glock 26, since Radian and Strike Industries make no G26 unit; the Herrington HC9C, HC95 V2, and PMM Duty are its thread-on comps. Killer Innovations says the Velocity is not designed for the Glock 26.
The Glock 34 runs a thread-on comp: Radian, Strike Industries, and the PMM barrel-and-compensator combo have no G34 version. The PMM Duty lists the G34 Gen 4 and Gen 5, and PMM does not recommend it on a Gen 3 Glock 34. The G34 slide is already the longest in this lineup, so a comp pushes overall length into competition-holster territory.
Nothing on this page fits them. Every comp here is a 9mm device, and the Glock 22 and 23 are .40 S&W, the Glock 20 is 10mm, and the Glock 21 is .45 ACP. A 9mm comp on a .40 barrel puts a .355 bore in front of a .400 bullet. Start with a caliber-correct threaded barrel and a comp listed for that caliber; a 9mm conversion barrel in a .40 frame is the one route back to a 9mm comp.
A thread-on Glock compensator needs a 1/2x28 threaded barrel cut for your model and generation, and that barrel has to clear the comp maker's exclusion list. The True Precision threaded barrel for the Glock 19, 19X, and 45 ($180.49) covers the Glock 19 Gen 3 through Gen 5 plus the Gen 5 19X and 45. True Precision is not on the Herrington HC9C, HC95 V2, or Agency Arms 417 barrel exclusion lists, and on a third-party barrel the Killer Innovations Velocity installs with tools rather than tool-free.
On a Glock 26, the True Precision threaded Glock 26 barrel ($180.49) covers Gen 3 through Gen 5 and is not on Herrington's barrel exclusion list. On a Glock 19 or Glock 45 Gen 6, the NDZ Performance threaded barrel ($159.99) is cut for Gen 6, and NDZ is not on Herrington's barrel exclusion list for the Gen 6 HC9C and HC95 V2.
On a Glock 47 or Glock 49, buy the matched Radian Glock 17 unit or the PMM combo, which include the barrel. On a Glock 17 Gen 3 or Gen 4, the True Precision threaded Glock 17 barrel ($180.49) is fit for Gen 1 through Gen 4. On a Glock 17 Gen 5, the Griffin Armament ATM threaded barrel ($186.15) is cut for Gen 5. Neither brand is on the Herrington or Agency Arms exclusion lists. PMM publishes no exclusion list for the Duty and does not guarantee aftermarket barrels, so confirm either barrel with PMM before pairing it with a Duty. On a Glock 17 Gen 6, use a barrel made for the Gen 6 Glock 17, never an earlier-generation G17 barrel. On a Glock 34, choose a threaded barrel that clears your comp maker's exclusion list in the comparison table. The wider barrel field, match and threaded, is ranked in the best Glock barrels guide.
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A non-threaded Glock 19 has three compensator paths that skip the threaded barrel. The Radian RAMJET + AFTERBURNER and the PMM barrel-and-compensator combo replace the factory barrel with a matched barrel and comp, and the Strike Industries Mass Driver mounts on a model-specific guide rod and runs on the factory non-threaded barrel, which Strike recommends for it. Everything else here except the ZEV Hypercomp slide kit is a thread-on comp for a 1/2x28 barrel.
Verdict: go integrated wherever a matched system exists, which covers the Glock 19 and Glock 17 from Gen 3 through Gen 5, the Glock 19X, Glock 45, Glock 47, and Glock 49, the Glock 19 and 45 Gen 6, and the Glock 26 through PMM. Buy a thread-on comp in three cases: you already own a compatible threaded barrel, you want that barrel to run a suppressor, or you shoot a Glock 34 or a Glock 17 Gen 6. Among thread-on comps, the PMM Duty, Tyrant T-Comp, and Griffin Micro Carry Comp use no set screws, the PMM Duty lists all eight model families here, and the Herrington HC9C is the only one listed from Gen 3 through Gen 6.
A compensator redirects propellant gas upward through ports in the top of the device as the bullet exits. That upward jet pushes the muzzle down against the natural upward rotation (muzzle flip) caused by the bore axis sitting above the grip. The result is a flatter-shooting pistol with faster target reacquisition between shots.
Effectiveness depends on three factors: port size and angle (larger ports redirect more gas), ammunition pressure (hotter loads produce more gas to redirect), and comp mass (weight at the muzzle resists flip). That is why the Griffin Armament Micro Carry Comp gives up recoil reduction to full-size three-port comps like the Herrington HC9C.
Compensator vs muzzle brake: a Glock 19 muzzle brake and a compensator are the same kind of device aimed differently. Compensators vent up to fight muzzle flip; brakes vent sideways and back to fight rearward recoil, and many pistol comps do some of both. The Strike Industries Mass Driver works differently from either: expelled gas drives a counterweight on the guide rod. Barrel porting, as on the ZEV Hypercomp kit, moves the ports into the barrel and slide so nothing is added to overall length.
New barrel-and-comp systems, Gen 6 fitment, and holster notes for the Glock 19, 17, and 45.
Before buying a Glock compensator, budget for a way to keep it timed, a compatible barrel, sights you can use over it, and a holster that fits the longer gun.
A comp only works if its ports finish pointing straight up. The ranked thread-on comps hold that position four different ways: set screws with threadlocker (Herrington HC9C and HC95 V2, Agency Arms 417, Arc Division Sparc V2), a shim stack with Loctite 272 (PMM Duty), a locking ring at the thread shoulder (Killer Innovations Velocity), or a body that indexes on the barrel shoulder or clamps with a wrench (Griffin Micro Carry Comp, Tyrant T-Comp). Follow the maker's torque and cure spec exactly: Herrington calls for no more than 11 inch-pounds on the HC9C's 6-32 set screw and 18 inch-pounds on the HC95 V2's 8-32 screw.
Factory Glock 19 barrels are not threaded, so a thread-on comp needs a 1/2x28 barrel for your model and generation, clear of the comp maker's exclusion list. The True Precision Glock 17, Glock 19/19X/45, and Glock 26 barrels, the Griffin ATM Glock 17 Gen 5 barrel, and the NDZ Gen 6 barrel above are cut for those guns and are not on Herrington's barrel exclusion list.
A comp can sit above the factory sight line or block the front sight. Suppressor-height irons restore a usable sight picture and co-witness through a red dot. The Agency Arms 417 has a front-sight relocation hole, so the front sight can ride on the comp itself.
A compensated Glock 19 is longer than stock, so plan on a holster cut for a compensated or threaded-barrel Glock 19. The Radian RAMJET + AFTERBURNER for the Glock 19 and 45 Gen 6 finishes at Glock 17 Gen 6 length, so most Glock 17 Gen 6 holsters fit it, and the 0.69 inch wide Griffin Micro Carry Comp fits most holsters made for threaded barrels.
Killer Innovations calls for a 13 lb recoil spring when the Velocity runs on a Glock 19, 19X, or 45. For every other comp, function-test your carry ammunition on the pistol's own spring before changing it.
A compensated Glock runs reliably when the ammunition makes enough slide momentum and the break-in and spring guidance from the comp maker is followed. A comp robs momentum from the slide, which is why Killer Innovations recommends good-quality 115gr ball, says +P also works well, and advises against reloads.
Herrington does not recommend plated, bi-metal, or frangible ammunition in any of its comps. Function-test your intended carry ammunition on the finished setup before trusting it.
Break-in is set by the comp maker, not by a universal round count. Herrington's HC9C and HC95 V2 run on stock springs only after 500 rounds of factory-new ammunition have gone through the threaded barrel, before the comp is installed, and the Loctite 243 then needs its 24 to 48 hour cure before the first shot. Killer Innovations wants its own barrels fully broken in, usually 300 to 400 rounds, before its comp goes on.
Killer Innovations cleans its comps by disassembling them and scrubbing with gun solvent and brushes, and Arc Division says to clean its comp whenever you clean the gun. Re-check set screws, locking rings, or shims at the same time.
Matched systems and shim-timed or clamp-on comps hand you the least install work; Herrington's set-screw comps add a 24 to 48 hour threadlocker cure before the first shot.
| Product | Price | Timing / Retention | Threaded Barrel? | Barrel Limits |
|---|---|---|---|---|
| Radian RAMJET + AFTERBURNER (G19 Gen 5) | $389.95 | Tapered locking screw into a machined V-groove, 15 in-lb; self-timing | No (matched barrel included) | Runs only on its own RAMJET barrel |
| Radian RAMJET + AFTERBURNER (G17 Gen 5) | $389.95 | Tapered locking screw into a machined V-groove, 15 in-lb; self-timing | No (matched barrel included) | Runs only on its own RAMJET barrel |
| Radian RAMJET + AFTERBURNER (Gen 6) | $389.95 | Tapered locking screw into a machined V-groove, 15 in-lb; self-timing | No (matched barrel included) | Gen 6 RAMJET barrel only |
| PMM Barrel + Comp Combo | $280 | Shim-timed with Loctite 272; no set screws | No (matched barrel included) | Factory slides; Micro and Ultra barrels take only their matching comp |
| Strike Industries Mass Driver (G19 / G17) | $95.95 | Model-specific guide-rod assembly, Loctite 242, 25 in-lb on the nut | No (factory barrel recommended) | - |
| ZEV Combat Hypercomp Slide Kit | $999 | None needed; porting is machined into the slide and barrel | No (ported barrel included) | Complete Glock 19 Gen 3 top end |
| PMM Duty | $100 | Shim-timed with Loctite 272; no set screws | Yes, 1/2x28 | Not the Glock factory threaded barrel; factory slides |
| Tyrant T-Comp | $80.96 | Two-piece body clamped with the included 16mm wrench; no set screws, no shims | Yes, 1/2x28 | - |
| Griffin Micro Carry Comp | $61.05 | Self-indexes on the barrel shoulder, torqued on wrench flats | Yes, 1/2x28 | - |
| Killer Innovations Velocity | $104.49 | Locking ring at the thread shoulder; tool-free on KI Velocity or Sancer barrels | Yes, 1/2x28 | Comp must bottom on the thread shoulder; not with Strike modular guide rods |
| Herrington HC9C 3.0 | $71.99 | 6-32 set screw, Loctite 243, 11 in-lb max, 24-48 hr cure | Yes, 1/2x28 | SilencerCo, Bar-Sto, KKM, EFK |
| Herrington HC95 V2 | $99.99 | 8-32 set screw, Loctite 243, 18 in-lb max, 24-48 hr cure | Yes, 1/2x28 | SilencerCo, Bar-Sto, KKM, EFK |
| Agency Arms 417 (Gen 5 / Gen 3-4) | $110 | Two set screws with supplied threadlocker | Yes, 1/2x28 | Conversion barrels, AlphaWolf, SilencerCo, Fortis, Faxon, Glock OEM threaded |
| Arc Division Sparc V2 | $81.99 | Set screws wedge onto the barrel, not the threads; red Loctite | Yes, 1/2x28 | - |
Sorted by install work: matched and captured systems first, then thread-on comps without set screws, then set-screw designs.
Avid shooter with 10+ years of experience including competition shooting, an associate member of the Professional Outdoor Media Association (POMA), and a member of the National Shooting Sports Foundation (NSSF) and Safari Club International (SCI). Built 10+ AR-pattern rifles and several handgun platforms for home defense, competition, and suppressed night shooting.
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