B&T RQD Tri Lug Suppressor Mount 9MM HUB Compatible Suppressor to B&T/HK Spec Tri-Lug Barrel Stainless Steel and Titanium Finish. 375x24TPI "HUB" compatible suppressors available today and is made from titanium and stainless steel components. This HUB works with all B&T/HK Spec Tri-Lug 9mm barrels. It is simply threaded into compatible suppressors and tightened with a spanner wrench. HUB assemblies can be semi-permanently attached using Rocksett or other thread locking compounds if the end user chooses. Specifications for B&T RQD Tri Lug Suppressor Mount 9MM HUB Compatible Suppressor to B&T/HK Spec Tri-Lug Barrel Stainless Steel and Titanium Finish: Manufacturer: B&T Caliber: 9mm Luger Color: Silver Finish: Stainless Steel Threads per Inch: 1.375x24 Additional Features: Tri-Lug Mount Handle Color: Silver Handle Finish: Stainless Steel Blade Finish: Stainless Steel Case Finish: Stainless Steel Features of B&T RQD Tri Lug Suppressor Mount 9MM HUB Compatible Suppressor to B&T/HK Spec Tri-Lug Barrel Stainless Steel and Titanium Finish: Fully HUB Compatible Package Contents: B&T RQD Tri Lug Suppressor Mount 9MM HUB Compatible Suppressor to B&T/HK Spec Tri-Lug Barrel Stainless Steel and Titanium Finish