Yankee Hill Machine | 4445MB32 sRx Q.D. Brake | 5/8-32

The Yankee Hill Machine sRx Short Q.D. Muzzle Brake (4445MB32) is a compact quick-detach muzzle device intended for use with YHM’s sRx adapter system. It interfaces with the industry-standard HUB mounting interface and features a front taper designed to create a sealing interface ahead of the threads, reducing gas and debris on the threaded area. The device is offered in a dark phosphate finish for a subdued appearance and is optimized to minimize added length and weight when fielded with a compatible adapter and suppressor.

Applications: precision/competition shooting where fast attach/detach of suppressors is desired, and range use with quick-detach suppressor setups.

Product Specifications

• The product is identified as a Short sRx Q.D. Muzzle Brake intended for the YHM sRx system.
• The listed thread pattern is 5/8″-32 tpi for the muzzle device.
• The NFA thread pattern is listed as 5/8X32.
• The model designation is sRx.
• The finish is described as Black Phosphate.
• The color is listed as Black.
• The device requires the YHM sRx Adapter (YHM-4400) to function as part of the sRx quick-detach mounting system.
• An advertised benefit is minimal added length and weight when used with the sRx adapter and a compatible suppressor.
• The item includes a shim kit as an additional feature.
• It features a Q.D. mount intended for .30-caliber suppressors per manufacturer notes.
• The listed item weight is 0.12 (unit as provided in source data).
• The packaged dimensions are given as 7.1 x 3.2 x 1.4 inches (Length x Width x Height) in the provided data.
• The UPC is 841812101802.

This short sRx muzzle brake is built for shooters who prioritize a low-profile Q.D. suppressor interface that keeps additional length and weight to a minimum. Its tapered engagement ahead of the threads helps maintain a cleaner thread area during use and supports quick, repeatable attachment when paired with the appropriate YHM sRx adapter.