AT3 FLATLINE Upgrades

Transform your AT3 FLATLINE rifle with these expert-selected upgrades that enhance an already feature-rich platform. While the FLATLINE comes impressively equipped with ambidextrous controls, a 4.5-pound trigger, and a free-floating M-LOK handguard, these carefully chosen enhancements target specific performance areas that experienced shooters prioritize. From improved optics mounting solutions to enhanced recoil management components, each upgrade complements the FLATLINE’s “do everything” versatility while maintaining its reliability. These proven modifications let you push your already capable rifle even further, whether for competition, tactical applications, or precision shooting.