This Ruger Mark IV 22/45 features a Volquartsen Accurizing Kit with a flat trigger, a Tandemkross Halo (red), and a Holosun 507K-GR X2. A hard case and two 10-round magazines are included. Get the best bang for your buck when you get a Certified Used Firearm. When you see the Certified Used stamp on any of our firearms, you can be confident that you're getting exactly what you want - a gun only in very good to excellent condition and held to the highest quality standard. All Certified Used Guns come with a 'no questions asked' return policy.