This FN 509 CC Edge features an optic-ready slide and a threaded barrel with compensator. Purchase includes the original soft side case, manual, one 12-round magazine, two 15-round magazines, and optic mounting hardware. 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.