Yankee Hill SRX Short QD Flash Hider | 5/8×32

The Yankee Hill Machine (YHM) SRX Short QD Flash Hider (part 444532) is a compact, low-profile muzzle device engineered for use with the YHM sRx adapter interface. It uses a tapered seal in front of the threads to produce a consistent, repeatable mounting surface for the sRx adapter and related mounting hardware. The device adds minimal length and weight to the muzzle and is intended for range and competition use or for users building a low-profile suppressor-ready setup.

Product Specifications

• The product is listed as having a length of 1.8125 inches.
• The muzzle device length is specified as 1.8 inches in the vendor text.
• The length added to the barrel is listed as 1.175 inches on barrels with 0.6″ threads.
• The diameter is given as 0.75 inches.
• The thread pattern is 5/8-32 tpi and uses the sRx mounting interface.
• The model designation is sRx.
• The finish is described as Black Phosphate.
• The listing notes the unit requires the YHM sRx Adapter (YHM-4400) for proper Q.D. mounting.
• The item description lists 4140 Steel as a material in one source but this conflicts with other attribute data (see notes).
• The listing includes an Includes Shim Kit feature.
• The item is described as a Q.D. mount for 30 Cal suppressor in the attribute set.
• The NFA thread pattern field is listed as 5/8X32 in the attribute set.
• The item weight is listed as 1.05 (unit not specified in source data).
• The package dimensions are reported as 1.40 x 3.20 x 5.50 (in source attributes).
• The UPC for this product is 841812101833.

This SRX Short QD Flash Hider is tailored for users who prioritize a compact, repeatable mounting interface and a low-profile aesthetic. When paired with the YHM sRx adapter it provides a straightforward mounting solution that minimizes added length while preserving a consistent seating surface for Q.D. mounts. Its serviceable construction and concise footprint make it a practical choice for precision-focused range use and low-profile suppressor-ready builds.