Echelon 3D, 9mm striker fire, Black, 4.5" barrel. 17/20 mags. The Echelon™ from Springfield Armory sets a new standard for modern, striker-fired duty pistols. With a host of patent-pending features, this modular and highly adaptable handgun is designed around a robust stainless steel chassis and revolutionary optics mounting system. Engineered with superior ergonomics and built to withstand the harshest conditions, the Echelon takes its rightful place at the front of the pack. The Echelon from Springfield Armory – Unparalleled.  Front and Rear Night sights!