Hi Christopher and welcome. This 509c is a MRD tactical model. Cheers, stay safe and enjoy! This FN 509c Tactical Semi-Auto Pistol comes with one 12-round and one 24-round magazine, and because of this great money-saving package, it also comes with the rugged and miniature Vortex Venom Red Dot Sight. It produces an easily seen red 6-MOA dot reticle for split-second target acquisitions.

The newest version of FN's 509 pistols series, the 509C MRD is a compact pistol (hence the “C” in its designation) that's capable of mounting a mini red dot (hence the “MRD”).