Built around Walther's award winning PPQ platform, the Q4 TAC features an optics ready slide that comes with a Trijicon RMR, Leupold Delta Point and Docter optic ready mounting plates in addition to the fiber optic front sights and standard LPA competition iron sights already included. Coupled with a threaded barrel, Walther signature ergonomics and quick defense trigger, the Q4 is the last word in firearm performance. Features Include: 9mm, 4.6" Barrel length, 5.6 lbs Trigger pull, Capacity: 15 rds, 17 rds, 5.3" Height, 1.3" Width, Interchangeable backstrap, Two drop safeties, Picatinny rail.