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Yankee Hill Machine

YHM FAT CAT 5.56MM Suppressor with sRx Mount CAT Endcap

SKU YEYHM2210MB28 · MFR# YHM-2210-MB-28

$497Low stock — 3 left
NFA item — $0 federal tax stamp. Order, we file the ATF Form 4 on eForms, you pick up at your SOT dealer after approval. Flat $14.99 firearm shipping.
Licensed FFL · Class 2 SOTWe file the Form 4$0 tax stamp
How the Form 4 process works
Transfers on an ATF Form 4 with a $0 federal tax stamp (as of Jan 1, 2026). We file the paperwork on eForms and keep you posted on status; you pick up at your SOT dealer with photo ID after ATF approval. How the Form 4 works → NFA & suppressor guide →

This 5.56 NATO suppressor sports new baffle geometry resulting in reduced blowback. Built with the same care quality and attention to detail that has defined the YHM brand for generations the Fat Cat was created to provide a compact suppressor with great sound. The Fat Cat is made from 17-4 stainless steel along with a Cobalt 6blast baffle. The combination of these materials allows the suppressor to be full auto-rated and designed for rigorous use. The overall length measures just 4.5 with the sRx adapter installed. That s a full inch shorter than our Turbo K model with its included adapter. The Fat Cat s larger 1.94 diameter creates more internal volume resulting in a lower more pleasant tone. With an average sound pressure level of 139dB at the muzzle the Fat Cat is quite the performer for its size. Available in either standard or Cat s Ass endcap. The Fat Cat includes the sRx 1/2 x 28 QD Adapter Mini sRx Muzzle Brake (1) YHM-2007 and (1) YHM-2146. All YHM products are also backed by our Limited Lifetime Manufacturer s Warranty. Caliber: 5.56mm Weight: 11.2 oz./Adapter 13.2 oz Length: 4.25 /Adapter 4.50 Diameter: 1.94 Construction: 17-4 Ph SS/Cobalt 6 Blast Baffle Mount: sRx 1/2 x 28 Q.D. HUB Adapter Decibel Rating: 139 dB Minimum Barrel Lengths: 5.56 NATO: 10 Minimum barrel length. Full Auto Rated

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications
Manufacturer SKUYHM-2210-MB-28
UPC841812101789
CategoryNfa
BrandYankee Hill Machine
ColorBlack
Length4.5"
Diameter1.9400
ConditionNew
CA Prop 65Yes
Thread Type1/2-28
Body MaterialStainless Steel
Attachment TypeQuick Attach
Baffle MaterialCobalt 6
Full Auto RatedYes
Primary Caliber5.56mm
Suppressor TypeSuppressor
Compatible Calibers223 Rem
FulfillmentSOT dealer + Form 4