Compact 5.56 NATO suppressor by Yankee Hill Machine with Mini sRx mount. Constructed from 17-4 PH stainless steel with a 718 Inconel blast baffle, full-auto rated, 1.94″ diameter, 4.50″ length with adapter.
The Yankee Hill Machine Fat Cat is a compact suppressor designed for 5.56 NATO use and supplied with the Mini sRx mount. It combines a 17-4 PH stainless steel body and a heat-treated 718 Inconel blast baffle to deliver a durable, full-auto-rated design for rigorous use. The unit’s larger 1.94″ diameter increases internal volume for a lower tonal signature, and it carries a published average muzzle pressure of 141 dB. The Fat Cat’s overall length measures 4.50 inches with the sRx adapter installed, making it a short-profile option in its class.
Product Specifications
The caliber is 5.56 NATO.
The suppressor body is constructed from 17-4 PH stainless steel with a heat-treated 718 Inconel blast baffle.
The finish is Black Nitride.
The thread pattern is 1/2×28.
The overall length measures 4.50 inches with the sRx adapter installed.
The body length without adapter measures 4.25 inches.
The outer diameter is 1.94 inches.
This suppressor is rated for full-auto use.
The mount included is the Mini sRx Mount with 1-3/8-24 HUB interface.
The published average sound pressure level at the muzzle is 141 dB.
Minimum barrel length for 5.56 NATO is 10 inches.
The product UPC is 841812101776.
Designed for shooters who value a compact, serviceable suppressor, the Fat Cat pairs robust metallurgy with a short profile and an sRx mounting system for straightforward attachment. Its construction and reported decibel performance make it suitable for precision-oriented rifle setups and training sessions where a lower report and reliable full-auto capability are desirable. The Fat Cat presents a balanced option for operators seeking a durable, compact 5.56 suppressor built from proven materials.
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