Springfield Armory(R) Echelon 4.0C Comp is a compact semi-automatic pistol chambered in 9mm. It features a 4 in hammer-forged barrel with an integral compensator black polymer frame and optics-ready slide. This striker-fired pistol uses a 10-round magazine and features the Variable Interface System for direct mounting of compatible optics along with U-Dot sights.Key Features4 in hammer-forged barrel chambered in 9mm with integral compensatorCompact semi-automatic pistol with 10-round magazine capacityIntegral compensator designed into the barrel and slide configurationOptics-ready slide with Variable Interface SystemU-Dot sight system with black polymer grip moduleSpringfield Armory(R) offers firearms designed for defensive duty sporting and recreational applications. The company combines established firearm designs with modern manufacturing materials and feature sets. Springfield Armory(R) firearms include a broad selection of pistols and long guns designed around reliability practical handling and contemporary shooting requirements.