The Yankee Hill Machine (YHM) Fat Cat is a compact suppressor designed for .223 Rem / 5.56 NATO use. It ships with the sRx quick-detach 1/2×28 adapter and includes a Cat-style end cap. The Fat Cat balances short overall length and increased internal volume for reduced perceived report in a small package.

Key Specifications

• The suppressor is chambered for **.223 Rem / 5.56 NATO**.
• The overall length measures **4.25 inches**.
• The outside diameter measures **1.94 inches** for increased internal volume.
• The construction uses **steel** with a blast baffle configuration.
• The package includes an **sRx 1/2×28 quick-detach adapter**.
• The NFA thread pattern is **1/2×28**.
• The finish is **matte black**.
• A **Cat end cap** is included with this model.
• The unit is **full-auto rated** for appropriate use conditions.
• Minimum recommended barrel length for 5.56 NATO is **10 inches**.

The Fat Cat delivers a compact, serviceable suppressor option for users seeking reduced report without a long can. Its quick-detach sRx adapter and Cat end cap provide practical mounting and end-cap choices for a range of rifles and applications. Built with durable steel construction and a blast-style baffle, the Fat Cat is positioned as a dependable, short-profile NFA device for informed, performance-focused shooters.