Holosun Technologies IRIS 1, Rifle Laser System, Red Laser, Fits Picatinny, Remote Activated Button, Anodized Finish, Black IRIS-RD1 IRIS 1 is a single-function laser device with a redesigned 7075 aluminum housing that reduces weight by 33% and overall height by 20%. Additionally, the IRIS 1 now features an onboard fire button for momentary or constant ON functions, as well as an updated rear-facing selector switch to choose modes and power for both the onboard fire button and the included remote activation button. IRIS 1 is available in Red, Green, or Infrared (IR) versions.