This FN 509 Tactical features a threaded barrel with protector, a co-witness height front night sight, and a Swampfox green dot. Includes the original box, soft case, manual, two 15-round magazines, one 17-round magazine, one 24-round magazine, an extra backstrap, and an optic plate kit. 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.