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Plenty of great 9mm pistols leave the factory with M13.5×1 left-hand metric threads instead of the usual 1/2×28, and that's the exact gap this piston covers. The Banish 9 was designed around interchangeable pistons at the rear of the suppressor, so moving between hosts means trading one piston for another rather than shelling out for a whole new can. Drop this one in and your Banish 9 threads right onto HK VP9 series pistols and other European-pattern barrels that run the metric left-hand pitch.
Banish machines these pistons from heat-treated steel, so it holds up to the heat and carbon that come with regular range sessions. The thread diameter, pitch, and rotation direction are engraved right on the piston, which sounds like a small detail until you're digging through a range bag with three different pistons in it. That left-hand marking matters too, since LH threads tighten the opposite way and it's nice to have the reminder machined into the part itself.
The swap is about as simple as suppressor maintenance gets. Unscrew the booster assembly, exchange the piston, and reassemble. No gunsmith, no proprietary tools, no waiting. That flexibility is a big part of what makes the Banish 9 platform so practical for anyone running more than one 9mm host. Keep your 1/2×28 piston for the American-threaded guns and this one for the metric hosts, and one suppressor covers the whole safe.
If you own a Banish 9 and anything with a metric-threaded barrel, this is the piece that ties them together. It's a small part, but it's the difference between one suppressor doing double duty and leaving a good host sitting in the safe unsuppressed.
M13.5×1 left-hand is the common metric thread pitch on many European 9mm pistols. Factory-threaded HK VP9 series barrels are the classic example, and you'll also find it on a number of other European-pattern threaded barrels. If your barrel is marked 13.5×1 LH, this is the piston you want.
Not at all. The piston sits in the booster assembly at the rear of the suppressor, so you unscrew the assembly, swap the piston, and put it back together. It takes a couple of minutes and requires no special tools or gunsmithing.
Left-hand threads tighten counterclockwise, which is the opposite of standard threads. Banish engraves the thread spec and rotation direction right on the piston so there's no guesswork during installation. Just remember to spin it the opposite way from what feels natural and it seats up snug.
No, the Banish 9 ships standard with a 1/2×28 setup, which covers most American-threaded 9mm barrels. This M13.5×1 LH piston is specifically for metric left-hand threaded hosts. Owning both lets one suppressor move between your entire 9mm lineup.
| UPC | 810171225436 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 100000311178 |
| Caliber/Gauge | 9mm |
| Color | Black |
| Length | 4.10" |
| Model | |
| Product Type | Piston |
| Shipping Weight | 0.0 |
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