Yankee Hill Machine sRx Long QD Muzzle Brake | 1/2-28 | 4405MB28

The Yankee Hill Machine sRx Long Q.D. Muzzle Brake is a low-profile, quick-detach muzzle device designed for use with the YHM sRx mounting system and its compatible adapter. It provides a compact mounting point for suppressors when used with the YHM sRx Adapter (YHM-4400) and is finished in black phosphate. The brake adds minimal overall length to a suppressor setup while providing a large taper in front of the threads for consistent seating.

Typical applications include use in suppressed range or training setups and as a component of a dedicated suppressor-ready build that uses the YHM sRx interface.

Product Specifications

• The manufacturer is Yankee Hill Machine.
• The model is sRx.
• The manufacturer part number is 4405MB28.
• The thread pattern is 1/2-28 tpi.
• The overall length measures 2.30 inches.
• The length added to a barrel (on barrels with 0.6″ threads) is 1.675 inches.
• The outer diameter is 0.9375 inches.
• The finish is Black Phosphate.
• The device is designed to fit the Yankee Hill sRx system.
• This item must be used with the YHM sRx Adapter and is compatible with the HUB 1-3/8″ x 24 mounting interface.
• The brake must be paired with the YHM sRx Adapter (YHM-4400) for QD suppressor mounting.
• Includes Shim Kit as noted in product attributes.
• UPC: 841812101529.

The sRx Long Q.D. Muzzle Brake gives builders a clean, low-profile attachment point for suppressor-equipped firearms that use the YHM sRx system. Its compact footprint and consistent tapering make it well suited for range and training setups or any build prioritizing a minimal, serviceable suppressor interface.