The Echelon 4.5 9mm threaded barrel pistol with three-dot tritium sights sets a new standard for modern striker-fired duty pistols. With a host of patent pending features this fully ambidextrous handgun is designed around a robust stainless steel chassis and a revolutionary optics mounting system. The tritium 3-dot sight configuration delivers superior low-light performance while the 1/2×28 threaded barrel is ready for mounting the suppressor of your choice. – Caliber 9mm – Color Black – Barrel 5.28 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) 17-Round (1) 20-Round – Weight 24.5 oz w/ Flush Mag 24.9 oz w/ Extended Mag – Length 8.8 – Height 5.5 w/ Flush Mag 6.5 w/ Extended Mag