Yankee Hill Universal Rifle 1/2''-36 Tpi 17-4 Stainless Steel Black Melon. Due to its simplistic design there is virtually no way to incorrectly install the suppressor and risk the chance of it coming loose yet it provides easy removal. To install simply remove your existing mount mechanism from your suppressor and thread on our Universal Rifle Suppressor Mount using a 3/4" open end wrench. Then simply thread the now two-piece suppressor onto your barrel. Specifications for Yankee Hill 214536 Universal Rifle 1/2"-36 Tpi 17-4 Stainless Steel Black Melon: Manufacturer: Yankee Hill Machine Color: Black Finish: Black Melonite QPQ Fabric/Material: 17-4 Stainless Steel Threads per Inch: 1/2x36 Gun Type: Rifle Yankee Hill 214536 Universal Rifle 1/2"-36 Tpi 17-4 Stainless Steel Black Melon