Springfield Armory Echelon Compact 9mm Luger 4in OD Green Cerakote Pistol - 18+1 Rounds - Engineered for carry and finished in durable OD Green Cerakote, the Echelon 4.0C retains the key features of the full-size model, with a shorter 4in Barrel and compact frame for enhanced concealability. Its revolutionary Variable Interface System provides unmatched direct-mount compatibility with today's leading red dot sights, complemented by tritium U-Dot irons for fast target acquisition. The serialized Central Operating Group is housed in a compact frame, offering a flush magazine and 18 Rounds with the extended magazine. Compact Demensions: Shortened at the frame and muzzle, the Echelon 4.0C boasts full-size features in a concealable package. Central Operating Group: The Central Operating Group is self-contained and serialized, providing a robust housing for the patent pending operating system. OD Green Cerakote: Finished in Cerakote to exceed the most rigorous demands, ensuring your firearm stands strong when it matters most.