YHM R9 9mm Suppressor

Description

YHM R9 9mm Suppressor

If you run several hosts and would rather not stack up tax stamps to cover all of them, the YHM R9 9mm suppressor was built for exactly that problem.

Yankee Hill Machine designed the R9 around high-volume 9mm fire, which means every choice in the design traces back to that one priority. In particular, the body is a fully welded, tubeless build machined from heat-treated 17-4 PH stainless steel. Because there is no separate outer tube, nothing eats up internal volume or adds weight. Given that, the can takes sustained strings from subguns and 9mm SBRs in stride, and YHM rates it at 123 dB on 9mm. Coupled with that durability, its 5.2-inch length and 1.5625-inch diameter keep it clear on a short PCC. Once you start moving between targets, that balance matters more than raw suppression numbers.

What separates the R9 from a dedicated 9mm can is reach. Notably, YHM also rates it for .300 BLK, .308 Winchester, 5.56 NATO, 6.5 Grendel, and 350 Legend. Since one can covers all of them, a single stamp stretches across a subgun, an SBR, and a bolt gun. The rear threads use the industry-standard 1-3/8″-24 HUB pattern, which means the YHM R9 9mm suppressor accepts direct thread adapters, 3-lug mounts, and Q.D. hardware from YHM and other makers. Paired with the included 1/2″x28 direct thread HUB adapter and two suppressor wrenches, a fixed-barrel host is ready the day the stamp clears.

Key Features — YHM R9 9mm Suppressor

• Fully welded, tubeless body machined from heat-treated 17-4 PH stainless steel
• 123 dB sound rating on 9mm
• 5.2″ length and 1.5625″ diameter (5.5″ with the included direct thread adapter)
• 1-3/8″-24 HUB rear threads accept YHM and third-party mounting hardware
• Rated for 9mm, .300 BLK, .308 Winchester, 5.56 NATO, 6.5 Grendel, and 350 Legend
• Limited full-auto rated
• Ships with a 1/2″x28 direct thread HUB adapter and two suppressor wrenches
• Made in the USA

 

Why This Product Stands Out

Multi-caliber cans usually ask you to give something up. For instance, some carry rifle-rated weight you do not need on a 9mm subgun. In contrast, others suppress well on one host and merely acceptably on the rest. The R9 sidesteps that trade because YHM built it as a 9mm can first, then engineered enough margin into the baffle stack to survive rifle pressure. As a result, it shoots like a purpose-built pistol-caliber suppressor while still covering a .308 bolt gun.

The tubeless construction is the reason it works. Traditional cans sandwich a baffle stack inside a separate tube, although that tube consumes diameter you could otherwise spend on internal volume. YHM welds the baffles into a single structural unit instead, freeing up space for gas to expand and cool inside the same outside dimensions. Beyond that, the approach removes a seam that hard use tends to find, so the R9 holds up on hosts that punish lesser designs.

Then there is the practical side. Given that the HUB interface is an open standard rather than a proprietary lock-in, mounting hardware you already own will likely thread right on. That said, handgun use is not plug-and-play: YHM’s Nielsen Booster Assembly adapts the R9 to tilting-barrel pistols, and both the booster and its matching piston sell separately. The result is one can, one stamp, and a mounting path to nearly every host in the safe.

Ideal Use Cases

• 9mm pistol-caliber carbines and subguns
• 9mm and .300 BLK short-barreled rifles
• High-volume range training and suppressed classes
• Multi-host suppressor setups covering pistol and rifle calibers
• Suppressed hunting on rifle hosts meeting YHM’s minimum barrel lengths

 

Technical Specifications

 

Compatibility Information

Host Calibers and Minimum Barrel Lengths

YHM publishes minimum barrel lengths for every rifle caliber the R9 is rated to handle. Observe them, since running a suppressor behind a barrel shorter than its rating drives up back pressure and accelerates wear.

 

Mount Compatibility

The R9 uses 1-3/8″-24 HUB rear threads, which opens it to YHM’s full line of HUB mounting options alongside any third-party mount cut to that same standard. For example, the included 1/2″x28 direct thread HUB adapter covers fixed-barrel hosts such as PCCs and bolt guns straight out of the box.

Handgun Use

Tilting-barrel pistols require YHM’s Nielsen Booster Assembly, a spring-loaded unit that replaces the HUB mount and lets the host cycle normally under the added weight. Neither the booster nor its piston ships with the R9, so plan for both when budgeting a pistol setup.

NFA COMPLIANCE NOTICE

This item is regulated under the National Firearms Act (NFA). Purchase requires completion of ATF Form 4, and compliance with all federal, state, and local regulations.

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Manufacturer: Yankee Hill Machine Co. | Model: R9 | Type: Suppressor | Caliber: 9mm | UPC: 841812101598 | SKU: YHM-2155-28

THIS ITEM TRANSFERS ON AN ATF FORM 4 THROUGH TX ARMS OR YOUR LOCAL FFL/SOT DEALER. ALL NFA RULES AND REGULATIONS APPLY.