Engineered for carry the threaded Echelon™ 4.0C retains the key features of the full-size model with a shorter 4.7-inch threaded 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 three-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 4.7 Hammer Forged Steel Threaded (.5 x 28) Melonite® Finish 1:10 – Slide Billet Machined Melonite® Finish Optics-Ready – Frame Black Polymer – Sights Tritium 3-Dot – Recoil System Captive – Grip Width 1.2 – Magazines (1) 15-Round (1) 18-Round – Weight 25 oz w/ Flush Mag 26 oz w/ Extended Mag – Length 8 – Height 5.125 w/ Flush Mag 6.125 w/ Extended Mag