HK VP9A1 X Tactical w/Optic Full Size 9mm Luger 20+1 4.70" Black Threaded Barrel, Black Steel Serrated w/Optic Slide, Black Polymer Frame w/Picatinny Rail, Textured Grip, Vortex CCW The VP9A1 X Tactical stands out with its 4.70" hammer-forged barrel with threaded muzzle and suppressor-height sights. These sights provide a 1/3 co-witness through the window of a red dot sight while remaining visible over the top of most suppressors. Includes a Vortex red dot, 17rd and 20rd magazine.