The Yankee Hill Machine Sidewinder M2 is a user-serviceable .45 caliber suppressor designed for direct-thread pistol use. It incorporates a redesigned booster that uses the industry-standard piston and allows tool-less piston changes via a new rear cap. Construction details and test results are provided to support informed selection and maintenance.

Key Specifications

• The caliber is 45 Cal.
• The overall length is 9.30″.
• The outside diameter is 1.375″.
• The thread pattern is .578 x 28 (direct thread).
• The finish is Type III Hardcoat Anodized.
• The baffle type is a Mono-Core Hardcoat Anodized design made from 7075-T6 aluminum.
• The suppressor is user serviceable, with removable baffle and Nielsen device for cleaning.
• The unit includes a Nielsen piston and associated components made from 17-4ph stainless steel.
• The suppressor has 12 index points to allow point-of-impact adjustment while attached to the host firearm.
• The measured average dry sound signature when tested to Mil-Std 1474D is 133 dB on a Glock G21 using 230gr FMJ ammunition.

The Sidewinder M2 offers a balance of lightweight construction and serviceability for shooters who prioritize practical, maintainable suppressors. Its redesigned booster is compatible with widely used aftermarket pistons, and the tool-less rear cap and redesigned front cap simplify maintenance and service. Built with corrosion- and heat-resistant components and a hardcoat anodized finish, the Sidewinder M2 is intended to be a durable, versatile option for everyday carry and range use where a direct-thread .45 suppressor is appropriate.