YHM Turbo K-RB Integral Suppressed Upper Receiver Group - 5.56mm 10" Handguard 11.5" Barrel

The YHM Turbo K-RB integral suppressed upper receiver group delivers genuine sound reduction and operating efficiency in a single-stamp package built for 5.56mm rifles. This complete upper combines Yankee Hill Machine's proven Turbo suppressor design with an 11.5-inch barrel, all pinned and welded to keep you compliant with federal regulations. The integrated approach means you buy one tax stamp, not two—a smart financial move for shooters serious about hearing protection without the legal complexity of a separate suppressor.

Built for shooters who demand reliability under full-auto conditions, the Turbo K-RB features a low-profile gas block engineered to manage backpressure and cyclic rates intelligently. That means flatter shooting characteristics and less stress on your carrier group compared to traditional cans. The 17-4 PH stainless steel body with cobalt-enhanced blast baffles stands up to hard use, and the muzzle device design achieves 134 dB suppression—serious noise reduction that matters at the range or in the field. At 23.5 inches overall length and 3.6 pounds, you get a compact, manageable platform that doesn't sacrifice performance.

The handguard is M-LOK compatible, giving you modern mounting options for lights, vertical grips, or other gear. You're getting a complete upper receiver assembly here—YHM's Mil-Spec A3 upper, the specialized gas block, and the integrated suppressor. What you'll need to source separately is a bolt carrier assembly and charging handle to complete your build. This is purpose-built for shooters who understand the value of engineering simplicity and regulatory compliance in one clean package.

Key Features

• Integral Turbo suppressor pinned and welded to 11.5" barrel—single tax stamp required
• Full-auto rated construction for reliable cycling under sustained fire
• Engineered gas block reduces blowback and moderates cyclic rates
• 17-4 PH stainless steel with cobalt-enhanced blast baffles for durability
• M-LOK handguard for modern accessory mounting
• YHM Mil-Spec A3 upper receiver with flat-top design
• 134 dB sound suppression rating

Specifications

Frequently Asked Questions

What do I need to complete this upper receiver build?

The Turbo K-RB is a complete upper receiver assembly, but you'll need to source a bolt carrier assembly and charging handle separately to finish your rifle build.

How many tax stamps do I need for this system?

The barrel and suppressor are pinned and welded together as one unit, requiring only a single NFA tax stamp. This simplifies the registration process compared to separable components.

Is this rated for full-auto fire?

Yes, the Turbo K-RB integral suppressed upper is full-auto rated, though it's equally suited to semi-automatic applications.

Can I customize or modify the handguard?

The M-LOK handguard accepts standard M-LOK accessories for mounting lights, grips, and other tactical gear. The suppressor itself is pinned and welded and not user-serviceable.