Yankee Hill Machine sRx Mini Muzzle Brake | YHM-4401-MB-28

The Yankee Hill Machine sRx Mini Muzzle Brake is a low-profile Q.D. muzzle device designed for use with the YHM sRx mounting system. It is intended to minimize added length and weight when paired with the YHM sRx adapter while providing a tapered front interface for consistent suppressor mounting. The brake installs to a standard 1/2-28 threaded mount and ships in a black finish.

Applications: compact suppressed setups and precision sighting/competition where a low-profile mounting interface is desired.

Product Specifications

• The UPC is 841812101505.
• The model is listed as sRx.
• The manufacturer’s part number is YHM-4401-MB-28.
• The thread pattern is 1/2″-28 tpi.
• The NFA thread pattern is listed as 1/2×28.
• The finish is described as Black Phosphate in product text and listings.
• The color is listed as BLACK.
• The device is specified to be used with the YHM sRx Adapter YHM-4400.
• The muzzle device length is listed as 1.100 inches.
• The diameter is listed as 0.9375 inches.
• The length added to the barrel is listed as 0.475 inches on barrels with 0.6″ threads.
• The product type is listed as a Muzzle Brake.
• The fit is specified as Yankee Hill SRX.
• The product description indicates it includes a shim kit as an additional feature.

The sRx Mini Muzzle Brake is purpose-built for shooters who want a minimal, clean profile when running a suppressor with the YHM sRx system. Its tapered front interface and compact footprint make it a practical choice for builds where preserving sight radius and keeping overall length low are priorities. The brake provides a simple, durable mounting point that complements low-mass suppressor setups.