Engineered for carry the Echelon 4.0C retains the key features of the full-size model with a shorter 4-inch barrel and compact frame for enhanced concealability. Its revolutionary Variable Interface System provides unmatched direct-mount compatibility with today’s leading red dot sights complemented by tritium U-Dot irons for fast target acquisition. The serialized Central Operating Group is housed in a compact frame offering a 15-round capacity with the flush magazine and 18 rounds with the extended magazine. – Caliber 9mm – Color Black – Barrel 4 Hammer Forged Steel Melonite® Finish 1:10 – Slide Billet Machined Melonite® Finish Optics-Ready – Frame Black Polymer – Sights Tritium / Luminescent Front Tactical Rack U-Dot Rear – Recoil System Captive – Grip Width 1.2 – Magazines (1) 15-Round (1) 18-Round – Weight 24 oz w/ Flush Mag 25 oz w/ Extended Mag – Length 7.25 – Height 5.125 w/ Flush Mag 6.125 w/ Extended Mag