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Jk Armament
The JK Armament 155 Piston is a purpose-built replacement component for .45 ACP pistol builds using a piston-driven system. Sized at .578" x 28, this piston delivers reliable cycling and consistent performance in a compact package. Whether you're tuning a suppressed .45 or optimizing a custom build, JK Armament's precision engineering gives you the durability and repeatability serious shooters depend on.
Built from nitride stainless steel, the 155 Piston resists corrosion and handles the demands of regular shooting without babying. The nitride finish provides a hard, durable surface that handles both suppressed and unsuppressed fire. This is the kind of component that works quietly in the background—until you need it to perform, and then it does, every time.
JK Armament has built a reputation for producing tight-tolerance piston systems for suppressed and precision-tuned pistols. The 155 Piston fits that standard: it's engineered to exacting specs so your firearm cycles reliably with the gas system you've chosen. If you're running a .45 ACP platform and need a replacement or upgraded piston, this is a straightforward, no-nonsense choice.
| Brand | JK Armament |
| Caliber | .45 ACP |
| Piston Size | .578" x 28 |
| Material | Nitride Stainless Steel |
| Type | Replacement Piston |
The .578" x 28 sizing indicates this piston is designed for .45 ACP platforms using piston-driven systems with these gas port dimensions. Verify your specific firearm's specifications before purchasing.
Yes. The JK 155 Piston is designed to handle both suppressed and unsuppressed .45 ACP fire.
The piston is constructed from nitride stainless steel, which provides corrosion resistance and a hard, durable surface for long-term reliability.
Jk Armament
The JK Armament 155 Piston is a purpose-built replacement component for .45 ACP pistol builds using a piston-driven system. Sized at .578" x 28, this piston delivers reliable cycling and consistent performance in a compact package. Whether you're tuning a suppressed .45 or optimizing a custom build, JK Armament's precision engineering gives you the durability and repeatability serious shooters depend on.
Built from nitride stainless steel, the 155 Piston resists corrosion and handles the demands of regular shooting without babying. The nitride finish provides a hard, durable surface that handles both suppressed and unsuppressed fire. This is the kind of component that works quietly in the background—until you need it to perform, and then it does, every time.
JK Armament has built a reputation for producing tight-tolerance piston systems for suppressed and precision-tuned pistols. The 155 Piston fits that standard: it's engineered to exacting specs so your firearm cycles reliably with the gas system you've chosen. If you're running a .45 ACP platform and need a replacement or upgraded piston, this is a straightforward, no-nonsense choice.
| Brand | JK Armament |
| Caliber | .45 ACP |
| Piston Size | .578" x 28 |
| Material | Nitride Stainless Steel |
| Type | Replacement Piston |
The .578" x 28 sizing indicates this piston is designed for .45 ACP platforms using piston-driven systems with these gas port dimensions. Verify your specific firearm's specifications before purchasing.
Yes. The JK 155 Piston is designed to handle both suppressed and unsuppressed .45 ACP fire.
The piston is constructed from nitride stainless steel, which provides corrosion resistance and a hard, durable surface for long-term reliability.
