Yankee Hill 4405MB28 | sRx Q.D. Muzzle Brake | 1/2-28

The Yankee Hill Machine 4405MB28 sRx Q.D. Muzzle Brake is a low-profile muzzle device designed to integrate with the YHM sRx suppressor system. It uses a quick-detach mounting interface and is intended to be used in concert with the YHM sRx adapter. The brake adds minimal length to a suppressor-equipped setup while providing a robust tapered seal in front of the threads to limit gas and debris exposure to threaded interfaces. This unit is finished in black phosphate and lists an overall muzzle device length of 2.30".

Product Specifications

• The manufacturer part number is 4405MB28.
• The model is listed as sRx.
• The UPC is 841812101529.
• The thread size is 1/2″-28 tpi.
• The muzzle device length is 2.30 inches.
• The device diameter is 0.9375 inches.
• The listed finish is Black Phosphate.
• This product is designed to fit the Yankee Hill sRx system and requires the sRx adapter for full function.
• The product type is Muzzle Brake.
• Includes Shim Kit as an additional feature.
• Package dimensions are listed as 1.40 x 3.20 x 5.60.
• The package height is 1.4, package length is 7.1, and package width is 3.2.
• The listed weight is 0.2.

The 4405MB28 is intended for shooters building a compact suppressor-equipped system who want a clean, low-profile interface between the barrel and suppressor. Typical applications include range use with detachable suppressors and competitive or precision shooting builds that use quick-detach suppressor mounting. When paired with the correct YHM sRx adapter, the brake minimizes added length and preserves a consistent mounting taper to simplify attachment and removal of the suppressor.

Designed and finished for durability in the field, the YHM sRx muzzle brake is a practical choice for those prioritizing a streamlined suppressor interface and reliable thread sealing during repeated mounting cycles.