Holosun Technologies IRIS 2, Rifle Laser/Infrared System, Red/IR Laser, Fits Picatinny, Remote Activated Button, Anodized Finish, Black IRIS-RD2 IRIS 2 is a dual-function multi-laser device housed in a redesigned 7075 aluminum body that reduces weight by 45% and sits 21% lower than the previous model. It now features a center-mounted fire button for ambidextrous activation of both momentary and continuous ON functions. An improved, rear-facing power and mode selector switch enhances ergonomics and ergonomics. IRIS 2 also includes a new, ultra-compact remote fire button.