YHM Sidewinder Direct Thread Adapter 1/2-28 A direct thread adapter engineered to convert YHM Sidewinder, Cobra, and Cobra M2 pistol suppressors for fixed barrel pistol caliber rifle and carbine use. Installation requires removal of the spring retainer, spring, and piston attachment from the suppressor, then threading the direct thread adapter in place to provide a secure direct thread interface. Machined from 17-4PH stainless steel and finished in matte black for durable corrosion resistance, the adapter measures three quarters inch in length, threads 1/2-28, and weighs 1.86 oz for a low-profile, lightweight solution. Listed as item number YHM-3250, this adapter preserves bore alignment for reliable, repeatable performance and expands platform compatibility for Sidewinder, Cobra, and Cobra M2 suppressors.