Jk Jk155Piston5X28 155 Piston 1/2X28 9mm Raw
$99.75
The JK Armament 155 Piston in 1/2x28 thread pitch is a direct impingement component built for 9mm pistol platforms. This stainless steel piston handles the gas cycling duties in modern 9mm PCC (pistol caliber carbine) and AR-pattern builds that run suppressed or unsuppressed. Whether you're tuning a new build or replacing a worn component, a quality piston ensures reliable bolt carrier group cycling and consistent performance downrange.
JK Armament pistons are engineered for shooters who demand precision and durability in their gas systems. The 1/2x28 thread pitch is the standard for most 9mm suppressors and aftermarket components, making this piston a straightforward fit for common platforms. Raw stainless steel construction resists corrosion and withstands repeated firing cycles without premature wear.
Whether you're building a 9mm rifle for home defense, competition, or recreational shooting, selecting the right piston matters—it's the component that manages gas flow and keeps your bolt carrier running clean and smooth. This JK piston delivers the reliability you'd expect from a manufacturer focused on gas system components.
Key Features
- Designed for 9mm pistol caliber platforms
- 1/2x28 thread pitch—standard for 9mm suppressors and components
- Stainless steel construction for durability and corrosion resistance
- Direct impingement gas system component
Specifications
| Brand | JK Armament |
| Caliber | 9mm |
| Thread Pitch | 1/2x28 |
| Material | Stainless Steel |
| Type | Piston |
Frequently Asked Questions
What platforms does the JK 155 Piston work with?
This piston is designed for 9mm pistol caliber platforms, typically AR-pattern rifles and carbines, that use a 1/2x28 threaded gas block or gas tube system.
Is this piston compatible with my 9mm suppressor?
The 1/2x28 thread pitch is the standard for 9mm suppressors. This piston is threaded to that specification, making it compatible with standard 9mm suppressor mounts and components.
Do I need to do anything special to install this piston?
Installation depends on your specific platform and gas system design. Refer to your rifle's manual or a qualified gunsmith to ensure correct installation and gas tuning for your build.
