The Springfield Armory Echelon 4.0C is a feature-packed striker-fired 9mm pistol, built for duty-ready performance and modern modularity. This compact configuration includes a 4-inch barrel, night sights, and an optics-ready slide for rapid adaptability. As part of the Gear Pac, this model includes a Viridian RFX11 red dot optic, four magazines (one 15-round and three 18-round), and a Springfield range bag, giving shooters a premium, all-in-one defensive solution. The heart of the Echelon 4.0C is its self-contained Central Operating Group, which allows easy customization and modularity across grip frames and slides. The optics-ready slide is milled to accept a wide range of red dots, and comes pre-equipped with the high-visibility Viridian RFX11 red dot optic. The 3-dot night sights offer excellent low-light aiming capability and co-witness with most optics setups. Its black melonite finish adds exceptional durability and corrosion resistance to the steel slide, while the black polymer frame provides a secure grip and lightweight profile. Backed by Springfield's innovation and quality, this Gear Pac equips shooters with every tool they need for carry, defense, or range work.