The original Echelon set the benchmark for service-weapon performance. Now, the Springfield Armory Echelon 4.0C Semi-Auto Pistol with Aimpoint COA is here with all the hallmarks of the full-sized model but in a compact package that's built for concealed carry. The 4.0C is shorter at the frame and muzzle, so it stays hidden beneath layers. Like the original, it's built around the Central Operating Group that can be easily moved between grip modules in seconds and features an A-CUT slide cut that accommodates the included Aimpoint COA without the use of an adapter plate. The cold hammer-forged, Melonite-coated barrel shaves half an inch off the original's length, but still puts your shots right where you want them. This model comes with an Aimpoint COA closed-emitter optic mounted directly to the slide for a more secure interface. Includes 2 magazines. Compact variant of the Echelon A-CUT slide optics cut Central Operating Group allows for changes in grip module, etc. Cold hammer-forged, Melonite-coated barrel Ambidextrous controls Billet machined slide with Melonite finish Factory-mounted Aimpoint COA closed-emitter optic