Engineered to merge full-size capacity with a compact slide assembly the Echelon 4.0FC pairs a 4-inch barrel with a full-length grip. At its core is Springfield’s Central Operating Group providing a serialized foundation for modular performance. The revolutionary Variable Interface System enables direct-mount compatibility with a wide range of today’s leading optics. Fully ambidextrous and equipped with tritium/luminescent U-Dot sights the 4.0FC delivers duty-grade capacity with fast handling in a balanced do-it-all platform. – Caliber 9mm – Color Black – Barrel 4 Hammer Forged Steel Melonite® Finish 1:10 – Slide Billet Machined Melonite® Finish Optics-Ready – Frame Black Polymer Full-Size Grip Module w/ Compact Dust Cover – Sights Tritium / Luminescent Front Tactical Rack U-Dot Rear Viridian RFX11 – Recoil System Captive – Grip Width 1.2 – Magazines (4) 17-Round – Weight 24 oz w/ Flush Mag 25 oz w/ Extended Mag – Length 7.25 – Height 5.5 w/ Flush Mag 6.5 w/ Extended Mag