Yankee Hill Machine | Fat Cat 5.56 | 1/2X28

The Yankee Hill Machine Fat Cat is a compact suppressor engineered for 5.56 use, offering reduced blowback through refined baffle geometry and a larger internal volume for a lower tone. It pairs 17-4 stainless steel construction with a heat-treated 718 Inconel blast baffle and ships with an sRx adapter. The unit is full-auto rated and intended for sustained use in training and precision shooting environments.

Product Specifications

• The caliber is 5.56.
• The finish is Black Nitride.
• The thread pattern is 1/2X28.
• The primary material is listed as stainless steel.
• The reported construction includes 17-4 PH stainless steel and a 718 Inconel blast baffle.
• The outside diameter measures 1.94 inches.
• The mount uses a sRx adapter with a 1-3/8-24 HUB interface.
• The product is full-auto rated.
• The manufacturer lists an average sound pressure of 141 dB at the muzzle.
• The unit includes a Mini sRx Mount and two suppressor tools.
• The manufacturer specifies a minimum barrel length of 10 inches for 5.56 NATO.
• The UPC is 841812101783.

The Fat Cat balances compactness with material choices intended for durability under repeated use. Its larger diameter and updated baffle geometry target a more pleasant tone and reduced backpressure compared with smaller cans, making it a practical choice for range training and precision work where reduced muzzle report and shooter comfort are priorities.

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