Product Description The Rugged Suppressors 3-Lug Adapter (5/8x24) is a precision-made suppressor accessory built for fast, repeatable attachment on compatible 3-lug hosts. Designed with Ruggeds focus on durable construction and long-term reliability, this adapter helps ensure a secure interface for consistent performance at the range. It also incorporates a patented Go/No Go gauge to help confirm proper suppressor attachment for added confidence during use. Product Highlights 5/8x24 thread pitch 3-lug adapter for quick on and off suppressor mounting Patented Go/No Go gauge helps verify the suppressor is properly attached Precision manufacturing and rugged construction for long service life Made to 9mm H&K 3-lug specifications (not compatible with .45 ACP) Built to pair with Rugged Obsidian9 3-Lug mounting components Specs Brand: Rugged Suppressors Product Type: 3-Lug Adapter Thread Pitch: 5/8x24 Gauge: Go/No Go (patented) Compatibility Notes: Made to 9mm H&K specifications; not compatible with .45 ACP Manufacturer Part Number: OA006 UPC: 859383006730 Weight: 0.12 lb 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 products manufacturer.