The upper includes a new DUSK19 profile slide made of 17-4SS and finished in an attractive graphite gray. Front and rear serrations on the slide provide ease of chambering and press-check. The slide includes a 1/3 co-witness or suppressor height Night Fision Stealth Series sight with a Tritium insert for clear sight vision from DUSK to dawn. 19 degree grip angle for improved point ability and interchangeable flat & rounded backstraps to allow the shooter the most comfortable choice of grip. Additionally, the DUSK19 is light, weighing in at 19.8 oz without a magazine, and is the perfect EDC size.