This optic ready Glock 45 Mos includes the original case, one 17-round magazine, AmeriGlo co-witness height night sights, and optic plate. Backstraps are 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.