Staccato P DPO 9mm Luger 5in Diamond Like Carbon Black Pistol – 20+1 Rounds This Staccato P Threaded Barrel pistol sports a longer more accurate 5 inch threaded barrel. The 5 inch threaded barrel version, perfect for your favorite suppressor or Dawson ice comp. It’s improved serrations and fiber optics sights, defiantly puts the p in this 2011 professional pistol.