The Yankee Hill Machine R9 (brand part no. YHM-2155-28) is a 9mm suppressor built around a 1/2-28 tpi thread mount and a 11.8-inch overall length. The R9 favors shooters who want a reliable suppressor for their 9mm host.

Key Specifications

• Rated in 9mm for focused sound suppression.
• Measures 11.8 inches long.
• Threaded 1/2-28 tpi for direct attachment to compatible muzzle devices.
• Weighs approximately 10.7 ounces with a 1.562-inch diameter.
• Delivers a sound suppression level of approximately 123 dB.
• Built from 17-4 PH stainless steel using a fully-welded, tubeless design.
• Finished in matte black Cerakote.
• Full-auto rated and versatile across hosts from 17 HMR through 9mm, .300 BLK, and .308 Winchester with a Nielsen booster.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it's a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber is it rated for? 9mm.

How does it mount? A 1/2-28 tpi threaded direct-mount system, not a quick-detach mount.

Buy the Yankee Hill Machine R9 Suppressor

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Yankee Hill Machine‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.