Product Description The JK Armament Booster Piston in .578"x28 thread pattern is a precision-machined component built to seamlessly mate your suppressor to a threaded pistol barrel. Crafted from high-grade 17-4 PH stainless steel and finished in a durable black nitride coating, this piston delivers exceptional corrosion resistance and long-lasting surface hardness. Featuring a 1.55" diameter and .578x28 thread specification, it is ideally suited for .45 ACP pistols and other larger-than-9mm calibers requiring this larger thread pattern. Whether upgrading a suppressor setup or replacing a worn component, this piston provides a secure, reliable connection between suppressor and barrel. Product Highlights Precision machined from 17-4 PH stainless steel for superior strength and long-term durability Black nitride finish enhances corrosion resistance and surface hardness for extended service life .578"x28 thread pattern is compatible with .45 ACP and other larger-than-9mm pistol calibers 1.55" diameter piston securely mates suppressor to threaded pistol barrel Designed specifically for pistol use, ensuring consistent and reliable suppressor attachment Specs Brand: JK Armament MPN: JK155PISTON578X28BN UPC: 850064482263 Series: Piston Caliber: 45 Cal Thread Pattern: .578"x28 Diameter: 1.55" Material: Stainless Steel (17-4 PH) Finish: Nitride Color: Black Firearm Type: Pistol Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>