SureFire has designed the SF-TRILUG9 adapter to easily convert threaded-barrel 9 mm pistol-caliber carbines (PCC) and submachineguns for use with the SF-RYDER9-MP5 suppressor or other tri-lug suppressors and accessories. The SF-TRILUG9 is CNC-machined from U.S. mill-certified Chromoly steel, then heat-treated for increased strength and durability when subjected to high temperatures. Its durable Black Nitride finish adds corrosion protection in wet environments. The SF-TRILUG9 provides a secure mounting point for the SF-RYDER9-MP5 and delivers long service life through the harshest conditions.