Lightest 9mm Suppressor? BANISH 9K Review
Looking for the lightest 9mm suppressor? At 2.7 ounces and 4.1 inches, the BANISH 9K is one of them, and most pistols run it without a booster.
Last updated: October 19, 2026 · Originally published April 21, 2026
The BANISH 9K is a 3-D printed titanium pistol suppressor from Silencer Central, rated for 9mm and everything smaller, plus .300 Blackout. What sets it apart is weight, not volume: it trades a few decibels for being light enough that a tilting-barrel pistol still cycles without a Nielsen device. Federal paperwork is no longer enforced for suppressors since October 9, 2026, but your state’s law still decides whether you may own one, so check suppressor laws by state first. Small, light, and a little louder.
BANISH 9K Specs
Here is how the 9K lines up against its bigger brother, the BANISH PSTL 9 Ti (the suppressor Silencer Central used to sell as the BANISH 9). Numbers are from Silencer Central’s product pages, read October 10, 2026.
| BANISH 9K | BANISH PSTL 9 Ti | |
|---|---|---|
| Length | 4.1 in | 6.8 in (7.16 in with booster) |
| Diameter | 1.3 in | 1.35 in |
| Weight | 2.7 oz | 6.73 oz (8.57 oz with booster) |
| Baffles | 8 | 14 |
| Rated reduction | 26 dB | Up to 34 dB |
| Mount | Direct thread, 1/2×28 or 13.5×1 LH | 1/2×28 Micro Booster included; direct thread mounts sold separately |
| Booster needed on a pistol | No, on most pistols | Yes (booster included) |
| Calibers | .380, 9mm, 5.7×28, .300 BLK | .380 through 9mm, .300 BLK, .350 Legend and more |
| Price at Silencer Central | $699 | From $899 |
Why a Light 9mm Suppressor Skips the Booster
Most 9mm pistols use a tilting barrel (the barrel drops to unlock from the slide every shot), and hanging a heavy suppressor off the muzzle keeps that barrel from moving the way it should. That is why most pistol suppressors ship with a booster, a spring-loaded piston that lets the suppressor float so the gun runs. The 9K skips all of that. At 2.7 ounces it simply does not weigh enough to slow the barrel down on most pistols, so it threads straight onto the muzzle and you go shoot.
Now, “most” is doing some work in that sentence. Gun Digest had to drop to a lighter recoil spring before a Wilson Combat EDC X9 ran reliably, and a linked-barrel 1911 may not cycle at all. Basically, if your pistol is fussy with a light load, plan on trying a spring or a hotter load before you blame the suppressor.
How Quiet Is It?
Silencer Central rates the 9K at 26 dB of reduction, and its own description puts a 9mm shot at about 132 dB at the shooter’s ear. That is a lot quieter than an open muzzle, but it is not hearing safe, so wear ear pro. The PSTL 9 Ti has almost twice the length and 14 baffles to the 9K’s 8, and that is where its extra suppression comes from. Physics does not give out free decibels (I have asked).
Want it quieter? Run 147-grain subsonic 9mm. Most 115- and 124-grain loads leave the barrel faster than sound, and the little crack of the bullet is a noise no suppressor can touch.
On My Pistols
I have run the 9K on my Springfield Armory Echelon and on my Springfield Armory Kuna 9mm SBR, and it is the size that makes it. On the Echelon it adds about the length of a pocket knife to the muzzle instead of turning the pistol into a flashlight on a stick. On the Kuna it is right at home, short enough that the SBR still handles like an SBR.
Carrying suppressed? Holster fit is the next problem to solve, and Popular EDC has reviewed IWB holsters for everyday concealment.
Calibers, Mounts and Cleaning
The 9K is rated for 9mm and every pistol caliber below it, including .380 and 5.7×28, plus .300 Blackout. It mounts by direct thread only, in 1/2×28 or 13.5×1 LH, so order the thread that matches your barrel. It is a sealed printed suppressor (you do not take it apart), so cleaning means soaking it, not scrubbing baffles. Silencer Central backs it with a lifetime warranty.
Want one suppressor for several pistols, including .45? See our BANISH 45 review.
Lightest 9mm Suppressor or Quietest: 9K or PSTL 9 Ti?
If the pistol is going to be carried, or you just hate a nose-heavy gun, buy the 9K, the lightest 9mm suppressor in the BANISH line. If you want the quietest 9mm setup from Silencer Central and do not mind the extra length and the booster, the BANISH PSTL 9 Ti is the one. Price is $699 for the 9K at Silencer Central against $899 and up for the PSTL 9 Ti, so the light one is also the cheaper one. Wow.
BANISH 9K Questions
Is the BANISH 9K the lightest 9mm suppressor?
It is one of the lightest you can buy at 2.7 ounces. For comparison, the BANISH PSTL 9 Ti weighs 8.57 ounces with its booster.
Does the BANISH 9K need a booster?
No, not on most pistols. It is light enough that a tilting-barrel pistol cycles without one, but some guns need a lighter recoil spring, and a linked-barrel 1911 may not run it.
How much does the BANISH 9K reduce sound?
Silencer Central rates it at 26 dB of reduction, about 132 dB at the shooter’s ear with 9mm. Subsonic 147-grain ammo gets the most out of it. Wear hearing protection.
What thread pitch does the BANISH 9K use?
It is direct thread only, sold in 1/2×28 or 13.5×1 LH. Match it to your barrel when you order.
Can the BANISH 9K go on a 9mm carbine?
Yes. It is rated for 9mm, .380, 5.7×28 and .300 Blackout, and it works on 9mm carbines and SBRs as well as pistols.
Sources: Silencer Central product pages for the BANISH 9K and BANISH PSTL 9 Ti (read October 10, 2026); Gun Digest, “Silencer Central Banish 9K Review”; ATF, Update to NFA Transfer Guidance (October 9, 2026).
If you want the smallest suppressor that still makes a pistol pleasant to shoot, this is it. Just bring earplugs.
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