Yankee Hill Universal Rifle 1/2-28 Tpi 17-4 Stainless Steel Black Melon. This Rifle Mount from Yankee Hill Machine was developed to convert existing suppressors from other manufacturers to utilize your barrel threading as a direct mounting system. The Yankee Hill Machine Rifle Universal Mount uses a "nut" and bolt" design that is extremely secure but can be removed just as easily. The YHM developed this suppressor adapter to convert existing suppressors from other manufacturers to utilize your barrel threading as a direct mounting system. 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 the Yankee Hill Machine 1/2 x 28 tpi Universal Rifle Suppressor Mount using a 3/4" open end wrench. Then simply thread the now two-piece suppressor onto your barrel. For a great way to enhance your weapon with the use of a suppressor choose the Yankee Hill Machine YHM214528 Universal Rifle 1/2 x 28 tpi 17-4 Stainless Steel Black Melon. Specifications for Yankee Hill 214528 Universal Rifle 1/2"-28 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: 1/2x28 Gun Type: Rifle Yankee Hill 214528 Universal Rifle 1/2"-28 Tpi 17-4 Stainless Steel Black Melon