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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

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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 threads1/2-28, M13.5x1 LH, .578-28, 9/16-24
FitsProton Sidearm, Proton Safari
MaterialStainless steel