This Mossberg 940 Pro features a 3" chamber, vented-rib 28" barrel with red fiber-optic front sight, thumb safety lever, and oversized bolt knob. Four choke tubes are included: two Improved Cylinder, one Modified, and one Full. An extra 18.5" barrel with red fiber-optic front sight is also 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.