Yankee Hill Machine Fat Cat — 5.56mm Suppressor

YHM Fat Cat 556 with QD Adapter and 1/2 x 28 Muzzle Brake Suppressor - CAT End Cap

Get a lower, more pleasant tone without a long, bulky can — the Yankee Hill Machine Fat Cat is a compact 5.56 NATO suppressor built around new baffle geometry that genuinely reduces blowback compared to older YHM designs.

Built from 17-4 stainless steel with a heat-treated 718 Inconel blast baffle, the Fat Cat is designed for full-auto rated, rigorous use — YHM built the same care and attention to detail that's defined the brand for generations into this newest addition to their suppressor lineup. The standout feature here is the diameter: at 1.94", the Fat Cat's larger body creates more internal volume than YHM's slimmer offerings, resulting in a noticeably lower, more pleasant tone rather than the sharper crack some compact 5.56 suppressors produce.

With the included sRx adapter and the distinctive "Cat's Ass" endcap installed, overall length measures just 4.5" — a full inch shorter than YHM's Turbo K model with its included adapter, making the Fat Cat a genuinely compact option for anyone prioritizing a short, maneuverable suppressed setup without giving up sound performance.

Whether you're looking for a shorter suppressed profile than your current 5.56 can allows, want the deeper, more pleasant tone that comes with added internal volume, or need a full-auto rated suppressor built for hard use, the YHM Fat Cat delivers genuine engineering advantages in a compact package.

Explore our full lineup of NFA items and suppressors at https://www.nativeoutdoors.com/suppressors, or stop by the store — our staff can walk you through whichever purchase and transfer process applies to your situation.

All NFA item sales are subject to a completed ATF background check and applicable federal, state, and local laws.

Frequently Asked Questions

Q: What caliber is the Fat Cat rated for?
A: It's rated for 5.56x45mm NATO / .223 Remington.

Q: What is this suppressor made of?
A: It's built from 17-4 stainless steel with a heat-treated 718 Inconel blast baffle.

Q: How long is this suppressor?
A: With the included sRx adapter and Cat's Ass endcap installed, overall length is just 4.5".

Q: What makes the Fat Cat's tone different from other compact suppressors?
A: Its larger 1.94" diameter creates more internal volume than slimmer suppressor designs, resulting in a lower, more pleasant tone.

Q: Is this suppressor full-auto rated?
A: Yes, the Fat Cat is full-auto rated and built for rigorous use.

Q: What mounting system does this suppressor use?
A: It includes a 1/2x28 sRx mount adapter.