The Springfield Armory Echelon 4.0C Desert FDE shrinks the innovative modularity of the full-size Echelon framework into a carry-friendly, compact profile. Finished in durable Desert FDE Cerakote over its polymer frame and billet-machined slide, this striker-fired 9mm features a 4-inch cold hammer-forged steel barrel. It is built entirely around the innovative, serialized Central Operating Group (COG) chassis system, which allows the fire control unit to seamlessly drop into alternative grip modules. Designed for modern red dot integration, its revolutionary Variable Interface System (VIS) allows over 30 popular micro optics to mount directly to the slide without adapter plates. Complete with ambidextrous controls and premium tritium U-Dot night irons, this model ships with one 15-round flush magazine and one 18-round extended magazine. Springfield Armory Echelon 4.0C Compact 9mm 4" Bbl FDE Handgun w/ U- Dot Tritium Sights, 1x15rd & 1x18rd Mags EC9409F-U