YHM Nielsen Piston .45 Cal | M16x1RH Thread

The YHM Nielsen Piston is a purpose-built component intended for use in suppressor booster housings and compatible suppressor systems. It is described by the manufacturer as constructed from heat-treated 17-4 stainless steel for enhanced durability and corrosion resistance. The piston includes multiple adjustment points to address impact shift and is offered in common thread patterns for direct fitment to compatible devices.

Applications include installation as a component in class‑3 suppressor assemblies and use during range-based suppressed‑firearm system setup where timing and impact shift adjustments are required.

Product Specifications

• The manufacturer is Yankee Hill Machine.
• The model name is YHM Nielsen Piston.
• The listed caliber in the product name is .45 Cal.
• The thread pattern is M16x1RH.
• The piston is constructed from heat-treated 17-4 stainless steel.
• The piston is compatible with YHM booster housing YHM-2055.
• The product features 10 adjustment points to correct impact shift.
• The piston is not compatible with the original Sidewinder suppressor.
• The piston will work with Sidewinder M2 suppressors.
• The dimensional listing is 1.40 x 3.20 x 5.45.
• The listed height is 1.4000.
• The listed width is 3.2000.
• The listed length is 5.4500.
• The UPC is 841812101611.

The Nielsen piston is a focused component for suppressor systems that prioritizes material durability and adjustability. Its heat‑treated 17‑4 stainless construction and multiple adjustment points make it suitable for installers and technicians who need reliable, repeatable performance in suppressor timing and booster interfaces. Offered in common thread patterns, it integrates into compatible YHM and aftermarket assemblies where listed.