The YHM Turbo K-RB 5.56 NATO suppressor package pairs Yankee Hill Machine’s compact 5.56 NATO suppressor with a 1/2×28 Phantom Q.D. muzzle brake (brand part no. YHM-2180-MB-28). The K-RB is designed to reduce blowback and is built as a tubeless can of heat-treated 17-4 stainless steel with a Cobalt 6 blast baffle. It weighs 8.7 ounces before the adapter and measures 4.6 inches, and the 1.375×24 HUB blast chamber accepts other YHM mounts. The muzzle brake keeps recoil down whether the can is on or off. It is a good match for an AR carbine that splits time between suppressed and unsuppressed shooting.

Key Specifications

• The caliber is 5.56mm NATO, the cartridge YHM designed the Turbo K-RB around.
• Weight is 8.7 ounces, or 11.5 ounces with the adapter.
• Overall length is 4.6 inches, or 5.5 inches with the adapter, compact for a full-auto-rated rifle can.
• The mount is a 1/2×28 Phantom Q.D. muzzle brake with a Phantom Q.D. HUB adapter, both included.
• Body diameter is 1.5625 inches, the figure to check against handguard clearance.
• The design is tubeless heat-treated 17-4 stainless steel with a Cobalt 6 blast baffle, built for rigorous use.
• YHM publishes a sound rating of 138 dB for the Turbo K-RB.
• The blast chamber threads to the 1.375×24 HUB pattern, which permits many mounting options.
• The suppressor is full-auto rated, built for rigorous use.
• It was NTOA member tested and recommended in 2023, an endorsement from the tactical officer community.

Frequently Asked Questions

What muzzle device does this version use? A 1/2×28 Phantom Q.D. muzzle brake, which threads onto the barrel and accepts the Phantom Q.D. adapter on the can.

What is the minimum barrel length? YHM lists 10 inches for 5.56 NATO.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Buy the Yankee Hill Machine Turbo K-RB 5.56 NATO Suppressor with Phantom Q.D. Muzzle Brake

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Yankee Hill Machine‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer and it ships fast to your Class 3 dealer.