From Straight Shot Gunsmithing . This is the V Port Vaporizer muzzle brake threaded 1/2"x28 tpi for a 7mm bore. It is tapered down to 0.625" for a Remington 26" sporter contour. It is matte stainless and is in excellent condition. It flat out WORKS! Made my 7mm RUM in a sporter weight rifle feel like less than a 243 . It is also very loud. Asking $65 shipped to the US. I can email a picture if you would like. Money order or will take a personal check at my discretion. Post here and send me a private message if you want it. Thanks!