The Yankee Hill Machine sRx Long QD Muzzle Brake in 1/2×28 (Yankee Hill Machine part no. YHM-4405-MB-28) is the full-length brake in YHM’s sRx quick-detach line. It threads onto a 1/2×28 muzzle and, with the sRx adapter on a suppressor, locks the suppressor on through an internal taper seal. The 2.3-inch body puts more muzzle device on the front of the rifle than the Mini brake does. Yankee Hill designed the sRx line around a clean, low-profile suppressor setup, and it is made in the USA.

Key Specifications

• The muzzle thread is 1/2×28, the standard AR-15 pitch.
• Overall length is 2.3 inches, longer than the Mini sRx brake.
• Diameter is .9375 inch, a slim profile.
• Weight is 1.92 ounces, light for a full-length brake.
• The material is 4140 steel, a tough alloy for repeated mounting.
• The finish is black, a low-glare coating.
• The caliber rating is 9mm (.390 diameter) or smaller, as listed by Yankee Hill.
• It adds 1.675 inches to a barrel with .6-inch threads.
• It must be paired with the sRx HUB QD Adapter on the suppressor.
• The internal taper seal contains carbon so it cannot build up on the threads.

Frequently Asked Questions

How is the Long sRx brake different from the Mini? The Long brake is 2.3 inches long and weighs 1.92 ounces, while the Mini is 1.1 inches long. Both use the sRx taper interface.

Do I need the sRx adapter? Yes. Yankee Hill says the sRx muzzle brake must be paired with its sRx HUB QD Adapter on the suppressor.

What bore size is it rated for? Yankee Hill lists it for 9mm (.390 diameter) or smaller.

Buy the Yankee Hill Machine sRx Long QD Muzzle Brake, 1/2×28 Thread

If you want a full-length brake that also works as the suppressor anchor, the Long sRx in 1/2×28 does both. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and see more suppressor parts and accessories while you are here.