Springfield Armory Echelon 3-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 pistol with three-dot tritium sights sets a new standard for modern, striker-fired duty pistols. With a host of patent pending features, this fully ambidextrous pistol is designed around a robust stainless steel chassis and a revolutionary optics mounting system. In addition, the Echelon's three-dot tritium sights ensure performance in low-light conditions. The all-new Central Operating Group (COG) is self-contained and serialized, providing a robust housing for the patent pending operating system. For enhanced day and night visibility, self-illuminating tritium inserts are housed within the 3-dot sight system on the Echelon. 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.