RISEA(R) Rev 535 Slide-and-Snap(TM) AR Trigger The RISEA(R) Rev 535 Slide-and-Snap(TM) AR Trigger delivers next-generation performance with a fast, hassle-free installation that takes under 60 seconds on compatible mil-spec lowers. Featuring a crisp, no-take-up single-stage pull and a lightning-fast, tactile reset, it builds on the proven RA-535 APT design shooters trust. Interchangeable flat and curved trigger blades attach tool-free using TorLok(TM) technology, giving you instant customization. With built-in pins and a clean, secure install, the Rev 535 offers an easier, faster, and more adaptable way to upgrade your AR for improved accuracy and control.