The Yankee Hill Machine Suppressor-Tuned Gas Block (brand part no. YHM-9389-SS) is built for shooters looking to tune their AR’s gas system for a more enjoyable suppressed shooting experience. The gas port hole is 50% smaller than a standard gas block, and that reduced port size decreases port pop and mitigates blowback back at the shooter, two of the most common complaints when running a can. Because gas port size, barrel length, caliber, suppressor design, and ammunition all affect gas flow, YHM notes the block may require fine-tuning to match an individual setup precisely. It’s intended for a host firearm that will be shot exclusively with a suppressor attached, not for standard unsuppressed use.

Key Specifications

• Gas port is 50% smaller than a standard gas block.
• Reduces port pop during suppressed fire.
• Mitigates blowback to the shooter when running a suppressor.
• May require fine-tuning to match individual barrel, caliber, and suppressor combinations.
• Designed for a host firearm shot exclusively while suppressed.

Frequently Asked Questions

Is this gas block itself a suppressor or NFA item? No, it’s an ordinary gas block accessory for a host rifle; it’s not a regulated NFA part.

Can I use this gas block unsuppressed? It’s designed for a host firearm shot exclusively with a suppressor attached; unsuppressed use may require re-tuning the port size.

Buy the Yankee Hill Machine Suppressor-Tuned Gas Block

Tune your suppressed AR with a gas block from Yankee Hill Machine, part of our AR gas system lineup. Order it from our Lubbock, Texas gun shop as soon as it’s available to ship.