JMac Customs Taper Mount Suppressor Adapter HUB Low Profile Stainless Black. Our Taper Mount Adapter was designed to add minimal length and weight to your device while giving it the ability to quickly attach and detach from the muzzle device. Specifications for JMac Customs Taper Mount Suppressor Adapter: Manufacturer: JMac Customs Color: Black Finish: Nitride Fabric/Material: 17-4PH Stainless Steel Weight: 3 oz Package Contents: JMac Customs Taper Mount Suppressor Adapter JMac Customs TA-90T-X37: Taper Mount Suppressor Adapter HUB Low Profile Stainless Black