The Yankee Hill Machine (YHM) Nielsen piston is a dedicated suppressor piston designed for use with compatible pistol suppressors and YHM’s booster housing YHM-2055. It is built from heat-treated 17-4 stainless steel for corrosion resistance and durability, and provides a 10-position adjustment system to help minimize impact shift. This specific configuration fits 9mm applications and uses a 1/2×28 thread pattern.
Key Specifications
- Constructed from 17-4 stainless steel (heat treated) for durability and corrosion resistance.
- Designed for 9mm caliber applications.
- Features 10 adjustment points to help zero any impact shift.
- Thread pattern is 1/2×28 to fit compatible pistons and suppressors.
- The unit weighs approximately 1.4 oz.
- Finish is stainless for a consistent appearance and corrosion resistance.
- Model designation: Nielsen.
- Product type: Piston for booster/attachment use.
- Listed compatibility includes YHM booster housing YHM-2055 and many popular pistol suppressors.
- Additional noted feature: 9mm piston for R9 & N2O (per source data).
This Nielsen piston offers a robust, adjustable solution for 9mm suppressor setups where a durable, heat-treated stainless component is required. Its 10-point adjustment and proven stainless construction make it suitable for shooters seeking a reliable booster piston for compatible pistol suppressors and YHM booster housings.
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