The Yankee Hill Machine Turbo T K-RB (brand part no. 8025) is a 5.56mm integrally suppressed upper receiver group built around an 11.5-inch barrel with the Turbo T K-RB suppressor permanently pinned and welded in place. Because the combined barrel-and-suppressor length exceeds 16 inches, the assembly requires only a single NFA tax stamp rather than separate stamps for a short barrel and a suppressor. YHM includes a lightweight M-LOK handguard and a Mil-Spec A3 upper receiver, making this a complete, ready-to-mount upper for a compatible AR-15 lower.

Key Specifications

• Chambered in .223 Rem/5.56 NATO.
• Built on an 11.5-inch barrel, pinned and welded to the integral suppressor.
• Fitted with an M-LOK handguard.
• Built on a Mil-Spec A3 upper receiver.

Frequently Asked Questions

Is this an NFA item? Yes. The integrally suppressed barrel is a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

How many tax stamps does it require? Just one, since the pinned-and-welded barrel and suppressor combine to exceed the 16-inch minimum rifle barrel length as a single assembly.

Can the suppressor be removed or swapped to another upper? No — this is an integrally suppressed upper receiver group. The Turbo T K-RB suppressor is permanently pinned and welded to the barrel, not a separate can that threads or clamps on and off.

Buy the Yankee Hill Machine Turbo T K-RB Suppressed Upper

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4 and transfer through a licensed NFA (SOT/Class 3) dealer, with no federal transfer tax and 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.