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Yankee Hill Machine took a different approach with the Fat Cat. Instead of stretching a tube out past the muzzle, they went short and wide. The result is a 5.56 can that measures just 4.25 inches on its own, or 4.5 inches with the included sRx adapter installed, which is a full inch shorter than YHM's own Turbo K setup. The 1.94 inch diameter is where the magic happens. That extra girth creates more internal volume, which translates to a lower, smoother tone at the ear and a sound level in the low 140s at the muzzle. For a can this stubby, that is genuinely impressive.
The Fat Cat is fully welded from 17-4 stainless steel with a heat-treated 718 Inconel blast baffle taking the brunt of the abuse up front. That material combo earns it a full auto rating, so a weekend of hard range use is not going to faze it. The updated baffle geometry also cuts down on blowback, which your face will appreciate when you are running it on a direct impingement AR. At 10.6 ounces bare and 12.5 with the adapter, it keeps your rifle handy instead of nose-heavy. YHM backs the whole thing with their limited lifetime warranty.
This version ships with the sRx 1/2×28 QD adapter and a Mini sRx muzzle brake, so mounting is fast and repeatable. Pin the brake to your barrel, and the can spins on and locks up in seconds. Under the adapter sits an industry-standard 1.375×24 HUB interface, which opens the door to a huge range of aftermarket mounts down the road if your setup changes. YHM recommends a 10 inch minimum barrel length for 5.56, so it pairs nicely with everything from short-barreled builds to full-length rifles.
For anyone wanting to keep an AR compact without giving up real suppression, the Fat Cat makes a strong case. Short, tough, and priced right, it is one of the better values in the 5.56 suppressor world right now.
This model ships with YHM's sRx 1/2×28 QD adapter and a Mini sRx muzzle brake, so it attaches and detaches quickly with repeatable lockup. Underneath that adapter is a standard 1.375×24 HUB interface, which is one of the most widely supported mounting standards out there. That means you can swap to direct thread mounts or other HUB-compatible systems from a bunch of manufacturers whenever you want.
Yes. The tube is 17-4 stainless steel and the blast baffle is heat-treated 718 Inconel, a combination built specifically for high volume and full auto fire. It is a fully welded, non-serviceable design, so there are no internals to loosen up under hard use.
The Fat Cat averages around 141 dB at the muzzle on 5.56, which is strong performance for a can that measures only 4.5 inches with the adapter installed. The trick is the 1.94 inch diameter, which adds internal volume that a skinnier can of the same length just does not have. That extra volume also gives it a deeper, more pleasant tone and helps reduce gas blowback.
YHM specs a 10 inch minimum barrel length for 5.56 NATO. That makes it a great match for short-barreled ARs and pistols where keeping overall length down matters most, and it works just as well on 14.5 and 16 inch guns.
| UPC | 841812101772 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 2200MB28 |
| ATF Type | Silencer |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Length | 11.8 |
| Model | |
| Package Height | 2.5 |
| Package Width | 3.4 |
| Product Type | NFA – Silencer |
| Shipping Weight | 1.0 |
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