Yankee Hill Machine’s suppressor gas block provides an affordable option to tune AR-pattern rifles for use with a suppressor. It features a reduced gas port designed to decrease port pop and reduce excess gas directed back toward the shooter. The gas port hole is 50% smaller than a standard gas block, which helps mitigate blowback when shooting suppressed. Because barrel gas port size, barrel length, caliber, suppressor design, and ammunition vary, some fine-tuning of the port size may be necessary to match an exact setup.
Key Specifications
- The manufacturer is Yankee Hill Machine.
- The model designation is YHM-9389-SS.
- The item is described as a Suppressor Gas Block.
- The finish is Phosphate.
- The color is Black.
- The product type is Gas Block.
- The subcategory is listed as Long Gun Parts.
- The gas port hole is 50% smaller than a standard gas block to reduce port pop and blowback.
- It is designed for use on a host firearm that will be shot exclusively with a suppressor attached.
This suppressor gas block offers a straightforward way to improve suppressed shooting comfort and gas management on compatible AR platforms. Its reduced gas port and durable phosphate finish make it a practical component for shooters who plan a suppressed-only configuration and are willing to fine-tune their system for optimal performance.





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