Product Description The CGS Suppressors Nautilus Piston is a precision-engineered suppressor accessory designed to connect your Nautilus silencer to any firearm with compatible barrel threads. Machined from durable 17-4PH Stainless Steel and finished in a hard-wearing Black Nitride coating, this piston delivers long-lasting corrosion resistance and consistent performance. Featuring an M16x1 Left-Hand thread pattern and measuring 2 inches in length, it is well-suited for pistol-caliber hosts including .45 ACP. The self-aligning piston system ensures reliable, repeatable installation, while the positive spoke-lock design secures the piston firmly to the housing for enhanced safety and stability. Product Highlights Self-Aligning Design: The piston system self-aligns upon installation, ensuring a consistently accurate and secure fit to your Nautilus suppressor housing every time. Positive Spoke-Lock Mechanism: Features a robust spoke-lock system that securely locks the piston to the housing, minimizing movement and enhancing overall reliability. Premium 17-4PH Stainless Steel Construction: Built from high-grade 17-4 Precipitation Hardening Stainless Steel for exceptional strength, durability, and resistance to wear. Black Nitride Finish: The corrosion-resistant Black Nitride finish provides a tough surface treatment that withstands the harsh environments common in suppressor use. M16x1 Left-Hand Thread Pattern: Compatible with a wide range of pistol-caliber host firearms featuring M16x1 LH barrel threading, including .45 ACP platforms. Specs Brand: CGS SUPPRESSORS Model: Nautilus Piston Manufacturer Part Number (MPN): CGSNAU16X1LPIST UPC: 850002123203 Thread Pattern: M16x1 LH (Left-Hand) Length: 2" Weight: 1.30 oz Material: 17-4PH Stainless Steel Finish: Black Nitride Caliber Compatibility: .45 ACP Compatible Suppressor: CGS Nautilus Type: Suppressor Accessory / Piston 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. ]]>