Springfield Armory Echelon U-Dot 9mm Luger 4.5in Black Melonite Pistol - 15+1 Rounds - Engineered with superior ergonomics and built to withstand the harshest conditions, the Echelon 4.5in 9mm handgun sets a new standard for modern, striker-fired duty pistols. With a host of patent pending features, this modular pistol is designed around a robust stainless steel chassis. In addition, a revolutionary optics mounting system allows for unparalleled adaptability with a broad range of optics. Fully ambidextrous, the Echelon features a U-Dot sight system for fast target acquisition and a 15+1 capacity. The all-new Central Operating Group (COG) is self-contained and serialized, providing a robust housing for the patent pending operating system. The tritium-powered U-Dot sight picture of the Echelon is intuitive, accurate, and fast. By utilizing a set of movable pins, the Variable Interface System (VIS) on the Echelon achieves a low, direct mount optics solution for improved sight picture and intuitive alignment.