Short answer: yes, you can suppress a Glock 43X — but not with the barrel it came with. The 43X ships with a 3.41″ barrel that is not threaded, so before you shop for a can you need a threaded barrel, and realistically a set of suppressor-height sights to see over it. Budget about $140 for the barrel on the cheap end, or buy a 43X that already has both done.
That is the part most “best 9mm suppressor” lists skip, and it is the part that decides whether you end up with a quiet carry gun or an expensive paperweight. Here is the whole path, in the order you actually have to do it.
More suppressor guides: best 9mm suppressors · best .22LR suppressors · best .308 suppressors · best AR-15 suppressors · best suppressor for an MK18
Step one: the 43X needs a threaded barrel
Glock does not sell a factory-threaded 43X. Every suppressed 43X you have seen is running an aftermarket barrel, almost always 3.9″–3.92″ and threaded 1/2×28, which is the standard 9mm pitch in the United States. The extra half-inch of barrel is what gives the threads somewhere to live; it also buys you a few feet per second, which nobody will notice.
You have three ways to get there, and the right one depends on whether you already own the pistol.
If you already own a 43X: buy the barrel
A drop-in threaded barrel is the cheapest entry into a suppressed 43X. We stock the Backup Tactical threaded barrel for the Glock 43/43X at $139.99. It drops in with the same takedown you already know, no fitting, no gunsmith.
The catch is sights. Your factory sights sit below the diameter of almost every 9mm can, so once the suppressor is on you are aiming at a black tube. That is a separate purchase and a separate install.
If you are buying the pistol anyway: buy it already set up
This is the option most people should take, because the sights problem is already solved and the price difference is smaller than doing it piecemeal. In stock right now:
- Glock 43X “Blackout #2” with a 3.92″ Zaffiri 1/2×28 threaded barrel — $750
- Glock 43X, 3.92″ threaded barrel, black Cerakote, suppressor-height sights, 15 rounds — $875
- Same build in Flat Dark Earth with suppressor-height sights — $875
The two $875 guns are the ones we point most people at, because “threaded barrel and tall sights” is the combination that actually works on day one.
If you want it done and done: the Hush Puppy
The Glock 43X Hush Puppy at $1,845 is the turnkey version — 3.92″ threaded barrel, black Cerakote by Shark Coast Tactical, suppressor-height sights and a Holosun 407K red dot already fitted. Add a can and you are finished. It is the most expensive way in and the only one with nothing left to buy.
Step two: picking the can
A 43X is a small, light pistol with a short slide. That changes what a good suppressor looks like: length and weight matter far more than they do on a rifle, because everything you hang off the muzzle is cantilevered out in front of your support hand and dragging on a tilting-barrel action.
So the picks below are weighted toward short and light, not toward the last decibel. All of these are in stock as of 14 August 2026.
Best overall for a 43X: HUXWRX Flow 9K Ti — $679
5.33″ long, 1.0″ diameter, titanium. The 1″ body is the headline: it is skinny enough that some suppressor-height sights will still give you a usable picture, and the flow-through design vents gas forward instead of back into your face, which on a short pistol is the difference between fun and miserable. If you buy one can for this gun, buy this one.
Shortest: BANISH 9K — $699
4.1″ long, 1.3″ diameter. The shortest 9mm can we stock. On a 43X it barely changes the balance of the pistol, which matters if this is a gun you actually carry rather than a range toy. You give up some suppression versus a full-size can; that is the trade and it is an honest one.
Best value: SilencerCo 9 Osprey 2.0 — $589
6.9″ long, 1.30 x 1.75″. The Osprey is the eccentric one — the body hangs below the bore line instead of centered on it. That is a genuine advantage here, because it clears your sight line better than a round can of the same volume, and on some setups you can get away without tall sights entirely. It is longer than the others; it is also the cheapest way to a quiet 43X.
Best carry can: Rugged Sub9 — $742
1.37″ diameter, titanium, 17-4PH stainless internals. Rugged built the Sub9 specifically for subcompact carry pistols, which is exactly what a 43X is. If your plan is a suppressed everyday-carry gun rather than a range setup, start here.
Also worth a look
- SilencerCo Spectre 9 — 4.76″, 1.37″, $747.15. Nearly as short as the 9K.
- PWS BDE 9mm — 6.26″, 1.45″, $599.95. Cheapest titanium option on the shelf.
- Dead Air Wolfman — modular, 7.5″ long or 5.13″ short, $789. Buy once if you also want it on a PCC.
- Otter Creek Labs Milkman — 6″, $950. The enthusiast pick.
We stock 40+ more 9mm cans if none of these is the one.
Glock 43X suppressor comparison
| Suppressor | Length | Diameter | Price | Best for |
|---|---|---|---|---|
| BANISH 9K | 4.1″ | 1.3″ | $699 | Shortest package |
| SilencerCo Spectre 9 | 4.76″ | 1.37″ | $747.15 | Short, conventional |
| HUXWRX Flow 9K Ti | 5.33″ | 1.0″ | $679 | Overall best on a 43X |
| Rugged Sub9 | Compact | 1.37″ | $742 | Carry |
| PWS BDE 9mm | 6.26″ | 1.45″ | $599.95 | Budget titanium |
| SilencerCo 9 Osprey 2.0 | 6.9″ | 1.30 x 1.75″ | $589 | Sight clearance, value |
The part people get wrong: you need a booster
The 43X uses a tilting-barrel action, like every other Glock. Hang half a pound or more of steel off the muzzle of a tilting-barrel pistol and it will not unlock reliably — you get failures to eject, failures to go into battery, or a gun that simply short-strokes.
The fix is a Nielsen device, also called a booster or a linear inertial decoupler. It is a spring-loaded piston that lets the barrel do its normal tilt while the can stays put for a fraction of a second. Every pistol-rated can on this page is designed to run one.
Two things to check before you buy:
- The piston must match your thread pitch. For a 43X that is 1/2×28. Cans sometimes ship with a different piston, or with a fixed direct-thread mount intended for a PCC.
- Direct-thread mounts are for carbines. If a listing says “DT” or “direct thread” and does not mention a piston, assume you need to add one.
If you are not sure what a particular can ships with, call us before you file — a mismatched piston will otherwise cost you a range trip.
Ammunition: 9mm is the easy one
This is where the 43X owner gets a break. Suppressing a 5.56 rifle well means thinking hard about ammunition; 9mm mostly does not, because standard 147-grain 9mm is already subsonic. Out of a 3.9″ barrel even a lot of 124-grain loads are close to or below the sound barrier.
What that means in practice: buy 147-grain, shoot it, and you get the quiet you paid for without hunting special ammunition. Lighter 115-grain loads will crack supersonic and undo a good part of the can’s work — the suppressor is still doing its job, you are just adding a sonic boom back on top of it.
One caveat: heavier subsonic ammunition produces less slide velocity. On a small pistol already burdened with a can, that occasionally shows up as a cycling issue. If your 43X gets picky, that is the first variable to change.
Suppressor-height sights are not optional
Standard Glock sights sit low on the slide. A suppressor is centered on the bore axis, so a 1.3″ can puts its body well above your sight line — look through the factory notch with one mounted and you are looking at the back of a tube.
Suppressor-height sights (sometimes sold as “tall” or “co-witness” sights) raise the front and rear enough to clear it. The two $875 43X builds above and the Hush Puppy already have them fitted. If you are going the drop-in-barrel route on a pistol you own, add them to the cart at the same time.
The 43X M.O.S. models give you a second option: mount a red dot, and the optic sits high enough that the can is a non-issue. That is the cleanest solution if you were going to run a dot anyway.
What buying a suppressor actually involves in 2026
Two things changed recently, and they are getting mixed together in a lot of online discussion. They are not the same thing.
The tax stamp is $0. Under the One Big Beautiful Bill Act, the federal transfer tax on a suppressor dropped from $200 to zero effective 1 January 2026. That part is settled, it applies to everyone, and it is why a $679 can costs $679 today instead of $879.
Registration has not gone away. On 5 August 2026 a federal court in the Northern District of Texas struck down NFA registration for suppressors in Silencer Shop Foundation v. ATF. That ruling is limited to the parties in the case. Western Sport is not a plaintiff, which means our customers are not covered by it, and we are still filing Form 4s exactly as before. The NRA-ILA breakdown of the Texas NFA decision reads it the same way. Anyone telling you that you can walk out with a suppressor today is wrong, and following that advice is a felony.
The good news is that the process is nothing like it used to be. eForm 4 approvals have been running in days rather than the six-to-twelve months that people remember from a few years ago. You will fill out the paperwork with us, submit fingerprints and a photo, and wait — but the wait is now measured on a calendar, not a wall planner.
We handle the filing in the shop in Roanoke. If you have never done it before, it takes about twenty minutes and we walk you through every field.
The two-minute version
- Already own a 43X? Backup Tactical threaded barrel, $139.99 + suppressor-height sights + HUXWRX Flow 9K Ti, $679.
- Buying the pistol too? The $875 threaded-barrel 43X with tall sights, plus the can of your choice.
- Want zero decisions? The $1,845 Hush Puppy and one can.
- On a budget? SilencerCo 9 Osprey 2.0, $589, and its offset body may save you the sight upgrade.
- Buy 147-grain ammunition, and make sure your can comes with a 1/2×28 piston.
Glock 43X suppressor FAQ
Can you put a suppressor on a Glock 43X?
Yes, but not on a factory 43X. The stock 3.41″ barrel is not threaded. You need an aftermarket threaded barrel — typically 3.92″ in 1/2×28 — and you will want suppressor-height sights to aim over the can.
What thread pitch is a Glock 43X barrel?
Aftermarket threaded barrels for the 43X are 1/2×28, the standard American 9mm pitch. The factory barrel has no threads at all.
Do you need a booster to suppress a Glock 43X?
Yes. The 43X is a tilting-barrel pistol, so it needs a Nielsen device (booster / linear inertial decoupler) to cycle reliably with a suppressor attached. Make sure the piston matches 1/2×28.
What is the best suppressor for a Glock 43X?
For most people the HUXWRX Flow 9K Ti at $679 — 5.33″ long, a 1″ body and flow-through venting that keeps gas out of your face on a short pistol. If shortest-possible matters more, the BANISH 9K at $699 is 4.1″.
Is a suppressed Glock 43X hearing safe?
With subsonic 147-grain ammunition, a quality 9mm can on a pistol generally brings the report down to around the level people describe as hearing safe, and 9mm is one of the easiest cartridges to get there with. That said, “hearing safe” is a threshold, not a guarantee — conditions, indoor ranges and ammunition all move the number. Plenty of suppressor owners still wear plugs indoors.
How much does it cost to suppress a Glock 43X?
The cheapest honest path is about $820 — a $139.99 threaded barrel plus a $679 can — before sights and the cost of a booster if your suppressor does not include one. The federal tax stamp itself is now $0.
How long does it take to get a suppressor approved?
eForm 4 approvals have been coming back in days rather than months. It is dramatically faster than the process people remember, though it is still a wait and it is still required.
Can I buy a suppressor without a Form 4 after the August 2026 ruling?
No. The 5 August 2026 decision in Silencer Shop Foundation v. ATF applies only to the parties in that case. Western Sport is not one of them, so our customers are not covered and we continue to file Form 4s for every transfer. Do not act on advice that says otherwise.
Come see one
We are in Roanoke, and we keep 9mm cans on the shelf rather than in a catalog — you can handle the 9K next to the Osprey and see what a 4-inch can actually does to the balance of a 43X before you commit. Call (817) 393-4000 or browse the suppressors in stock.
What the paperwork looks like
If the Form 4 is the bit you have been putting off, we have written it out: how buying a suppressor works at Western Sport, including what it costs. There is no filing fee on anything you buy from us, and we submit as an eForm 4 rather than paper.
Lance Rankin is the owner and Chief Gunsmith of Western Sport, a family-run Type 07 FFL and Class 3/SOT dealer in Roanoke, Texas, serving shooters since 2007. Born and raised in Texas with over 50 years of experience handling firearms, Lance purchased Western Sport in 2017 and turned his lifelong passion into his profession. He specializes in AR-15 and AR-10 platform rifles, manufactures Western Sport’s own AR-15 line under the Rankin Industries brand, and runs the shop’s in-house Cerakote coating operation. When he’s not behind the counter or the workbench, you’ll find him on his ranch deep into the night, hunting coyotes with an AR-15 and thermal optics. Lance holds an MBA and personally shoots and tests the products Western Sport sells.
