SPRINGFIELD ARMORY ECHELON 9MM LUGER SEMI-AUTO HANDGUN WITH VIRIDIAN RFX11 Engineered with superior ergonomics and built to withstand the harshest conditions, the Echelon(TM) handgun sets a new standard for modern, striker-fired duty pistols. This modular pistol is designed around a robust stainless steel chassis and revolutionary optics mounting system. A Viridian RFX11 Green Dot Reflex Sight is already installed and ready to use. The RFX 11 is the next in a long line of purpose-built, high quality, and highly visible aiming devices from Viridian. Its tiny size is at home on any optics-cut concealed carry pistol or as a close-range offset sight on your rifle. At a mere Mfg: Springfield Armory