The Yankee Hill Machine Resonator Suppressed Upper, .300 Blackout (brand part no. YHM-7135) is a .300 AAC Blackout AR-platform upper receiver assembly with an integrated suppressor system. Yankee Hill Machine builds it for hearing-safe, reliable performance.
Key Specifications
- Chambered in .300 AAC Blackout.
- Finished in Black.
- Weighs approximately 4.3 lb shipping weight.
Frequently Asked Questions
Is this an NFA item? Yes. As an upper receiver assembly with an integrated 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? .300 AAC Blackout.
Is the suppressor removable? No. This is an integrally suppressed platform; the suppressor is permanently affixed as part of the complete firearm, not a separate direct-thread or QD-mounted can.
Buy the Yankee Hill Machine Resonator Suppressed Upper, .300 Blackout
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.
