AREX Defense has introduced the 4AMP, a contract pistol originally designed for German special forces maritime units, now coming to the civilian market. This saltwater-resistant 9mm pistol is built for extreme environments, featuring aggressive slide serrations for wet-hand manipulation, a threaded barrel, and optics-ready compatibility. A refined evolution of the Rex Delta, the 4AMP will be available in subcompact (12rd), compact (15rd), and full-size (17rd/24rd) configurations, including 5” and 6” duty models. This marks AREX’s next step in high-performance handguns for both professionals and civilians.