YHM SIDEWINDER M2 45CAL | .578-28 Thread

The Yankee Hill Machine Sidewinder M2 is a compact, lightweight pistol suppressor designed for user serviceability and broad piston compatibility. It uses a high-efficiency mono-core baffle and a Nielsen-type booster sleeve to support reliable semi-automatic function on relevant host pistols. The unit emphasizes low weight and serviceability for range use and precision pistol events.

Product Specifications

• Manufacturer is Yankee Hill Machine.
• Model is YHM Sidewinder M2.
• Thread pattern is .578-28 RH.
• Caliber is reported as conflicting (.45 and 9mm listed); see notes for details.
• Overall length is approximately 9.35 inches (sources list 9.3 and 9.35 inches).
• Diameter is 1.375 inches.
• Weight is reported as 10.55–10.6 ounces across sources.
• Primary materials include 7075-T6 aluminum mono-core, 6061-T6 outer tube, and 17-4PH stainless steel components.
• Finish is reported as Type III hardcoat anodized matte black (also listed as black nitride); see notes.
• Method of attachment is .578-28 RH.
• Full-auto rating is Yes.
• User-serviceable design is confirmed — baffle and Nielsen device removable with supplied disassembly tool.
• Reported average dry sound signature (MIL-STD 1474D) on a Glock G21 with 230gr FMJ is 133 dB.
• Piston compatibility is noted with common industry pistons (SilencerCo, Rugged, Dead Air).
• UPC is 841812101653.

The Sidewinder M2 is aimed at shooters who prioritize a lightweight, serviceable suppressor that accommodates piston interchangeability and straightforward maintenance. Its compact envelope and materials selection target reduced weight while preserving durability for routine range sessions and competitive pistol disciplines. The design’s user-serviceable features and reported piston compatibility make it a practical option for experienced shooters seeking modularity and easier cleaning.