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Booster piston
Pion
$45
Pistols|
The piston that lets a tilting-barrel pistol cycle with Proton Sidearm or Proton Safari on it.
PistolsCaliber
—Length
Stainless steelMaterial
Sold out.
Overview
Booster piston
Most pistol barrels tilt to unlock, and a can's weight on the muzzle stops them doing it. The booster in the can briefly takes that weight off, and the Pion is the piston that threads it to your barrel.
One comes in the box with Proton Sidearm in 1/2-28. Buy the one that matches your barrel's thread.
Pistols cycle
The booster lets a tilting-barrel pistol run with a can on.
Every common 9mm, .40 and .45 thread
Four threads.
Ships with Proton Sidearm
You only buy one if your barrel isn't 1/2-28.
Specifications
Pion specs
Specs can change without notice.
| Barrel threads | 1/2-28, M13.5x1 LH, .578-28, 9/16-24 |
|---|---|
| Fits | Proton Sidearm, Proton Safari |
| Material | Stainless steel |



