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One of the best things about the Banish 9 is how easily it moves between host guns, and this 1/2×28 piston is the part that makes it happen. Since 1/2×28 is the most common thread pitch you'll find on factory-threaded 9mm pistol barrels, this is the piston most Banish 9 owners reach for first. Pull the old piston out of the booster assembly at the rear of the suppressor, thread this one in, and your can is ready for a different host in about a minute. No tools drawer archaeology, no guesswork.
A piston takes a beating. Every shot slams it back and forth inside the booster, so soft metal is not an option here. Banish machines these from heat-treated steel so it shrugs off thousands of cycles without peening or wearing loose. The black finish matches the rest of the suppressor, and the thread diameter and pitch are engraved right on the piston, which saves you from squinting at threads trying to figure out which one you pulled out of the parts bin.
On a tilting-barrel pistol like a Glock 19 or SIG P226, the piston is the moving heart of the booster (Nielsen device) that lets the action cycle reliably with the extra weight of a suppressor hanging off the muzzle. Match the piston to your barrel threads and the whole system works the way it should. If you run the Banish 9 on multiple hosts, keeping a piston in each thread pitch you own means less fiddling at the range and more shooting.
Even if your suppressor already came with a 1/2×28 piston, a backup earns its keep. Pistons are wear parts by design, and having a fresh one on hand means a worn or dinged piston never sidelines your can. It weighs next to nothing and lives happily in a range bag pocket until the day you need it.
If your barrel is threaded 1/2×28, yes. That is the most common thread pitch on factory-threaded 9mm pistol barrels in the US, including most aftermarket threaded barrels for Glock, Smith & Wesson, and similar pistols. Some European-market pistols use metric M13.5x1LH threads instead, so double check your barrel before ordering.
Unscrew the booster assembly at the rear of the suppressor, remove the existing piston, and thread this one in its place. The whole swap takes about a minute with no special tools. The thread size is engraved on the piston so you can identify it at a glance later.
Pistons are made for tilting-barrel semi-auto pistols, where the booster helps the action cycle with a suppressor attached. For fixed-barrel hosts like pistol caliber carbines or lever guns, a direct thread mount or fixed barrel spacer is the better route. The piston setup is what you want for handguns like a Glock or SIG.
This particular piston is made for the Banish 9. The Banish 45 and Banish 46 use their own piston lineup, so make sure you match the piston to your specific can. If you own multiple Banish suppressors, the engraved markings help keep your pistons sorted.
| UPC | 810171225429 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 100000311173 |
| Caliber/Gauge | 9mm |
| Color | Black |
| Model | |
| Package Height | 0.5 |
| Package Width | 2.6 |
| Product Type | Piston |
| Shipping Weight | 0.05 |
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