Product Description The JK Armament HUB Piston Mount is a precision-engineered suppressor mounting solution designed for short recoil-operated, semi-automatic pistols. By isolating the suppressor from the moving barrel, it ensures consistent and reliable cycling on popular pistol platforms such as GLOCKs, SIGs, and virtually every other modern centerfire pistol. Built from a rugged combination of aluminum and stainless steel in a raw finish, the HUB Piston Mount threads directly into the base of the JK 155 serialized suppressor tube using the HUB-standard 1-3/8x24 (1.375x24) thread pitch. It installs seamlessly in place of the JK 155 suppressor&';s taper mount or other mount accessory, and its 1/2"x28 barrel-side thread pattern makes installation straightforward for 9mm pistols. The universal HUB thread standard also makes it compatible with any suppressor on the market that features HUB threads and sufficient internal length to accommodate the booster housing (approximately 1.8"). Product Highlights Isolates the suppressor from the moving barrel to maintain reliable operation of short recoil-operated semi-automatic pistols Compatible with GLOCKs, SIGs, and virtually all modern centerfire pistols chambered in 9mm HUB-standard 1-3/8x24 thread pitch ensures broad compatibility with any HUB-threaded suppressor on the market Durable aluminum and stainless steel construction with a raw finish for long-lasting performance 1/2"x28 barrel-side thread pattern for easy installation; replaces existing taper mount or other mount accessory Specs Brand: JK Armament Model: HUB Series: Piston Mount Caliber: 9mm Thread Pattern: 1/2"x28 Hub Thread Pitch: 1-3/8x24 (1.375x24) Material: Aluminum/Stainless Steel Finish/Color: Raw Weight: 4.50 oz MPN: JK155HPMB28 UPC: 850064482058 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.