Factory Kahr Arms Barrel, 9mm, extended & threaded in 1/2-28, includes thread protector. Match-grade barrel has a threaded muzzle to enable mounting of a compensator or suppressor. Fits Kahr TP/CT9/CW/P/S/ST9 only. Thread-1/2-28 Thread Length-.445 Barrel Length-4.5 inches Polygonal Riffling May Require Minor Fitting