YHM 3 LUG ADAPTER ASSY
The YHM 3 Lug Adapter Assembly gives you the flexibility to run your Yankee Hill Machine suppressor on HK-pattern host guns without committing to direct threading. Built around the proven HK standard, this adapter lets you quickly swap your R9 or Nitro N20 suppressor between firearms—or transition from a direct-thread setup to a 3-lug mount without buying a new can. It's the kind of versatility serious rimfire and centerfire shooters appreciate when they run multiple hosts or want the option to move gear between builds.
YHM engineered this mount with a 1 3/8"-24 thread pitch, so it threads onto barrels (or muzzle brakes) cut to that spec and accepts the matching lug interface on compatible suppressors. The combination of aluminum and stainless steel keeps weight down while delivering the durability needed for field use, and the matte black finish resists shine and plays well with modern tactical setups.
Whether you're setting up a .22 plinker or a centerfire hunting rifle with HK-compatible geometry, this adapter opens up suppressor portability that direct-thread-only shooters can't match. It's also a smart way to future-proof your suppressor investment if you think you'll add more compatible rifles down the road.
Key Features
- Converts compatible YHM suppressors to 3-lug HK-standard mounting
- Works with YHM R9 and Nitro N20 suppressors
- Aluminum and stainless steel construction for durability and light weight
- Matte black finish
- 1 3/8"-24 thread pitch for standard HK-pattern barrels
- Allows suppressor portability across multiple HK-compatible hosts
Specifications
| Brand | Yankee Hill Machine Co |
| Mount Type | 3-Lug (HK Standard) |
| Thread Pitch | 1 3/8"-24 |
| Materials | Aluminum and Stainless Steel |
| Finish | Matte Black |
| Compatible Suppressors | YHM R9, YHM Nitro N20 |
Frequently Asked Questions
What suppressors does the YHM 3 Lug Adapter work with?
This adapter is compatible with Yankee Hill Machine R9 and Nitro N20 suppressors equipped with a 3-lug interface.
What barrels or hosts can I use this on?
The adapter threads onto any barrel or muzzle device cut to 1 3/8"-24, which is the standard HK-pattern thread pitch. Many HK variants and HK-compatible AR platforms use this spec.
Can I swap this between suppressors?
No—the adapter threads onto your barrel or brake. If you want to move a suppressor between hosts, both hosts need the same thread pitch and lug pattern, and you'd swap the entire suppressor assembly. However, this adapter does let you convert a direct-thread suppressor to 3-lug mounting if your suppressor supports both interfaces.
Is this better than direct-thread mounting?
Neither is universally "better"—it's about your needs. 3-lug mounts allow you to quickly remove the suppressor without unthreading from the barrel, making suppressor maintenance and switching between hosts easier. Direct thread is simpler if you plan to leave the can on one rifle permanently.

