DI Optical FC1


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SKU: DI-FC1 DI Optical

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DI Optical's compact FC1 virtually parallax free prism gun-sight weighs just 170 grams with mount and offers many features in its lightweight package.  The rectangular 15mm x 21mm lens with a proprietary multi-layer anti-reflective coating provides an exceptionally well defined red dot. Housed in a rugged case CNC machined from a solid block of 6061-T6 aircraft grade aluminum, the FC1 is unsurpassed in its rugged construction.  The single, easy to use push button selects between 7 daytime and 7 night vision compatible modes. The FC1 mounts on standard a MIL-STD 1913 rail, or it can be used with an optional lever operated quick disconnect mount.


  • Virtually Parallax free prism optical system with a clear compact lens
  • Excellent size for carbines, sub-machine guns, and shotguns
  • Single button LED brightness control
  • Compact and rugged CNC machined aluminum housing
  • Requires only 1.5 inches of rail space
  • Meets military MIL-STD 810G durability testing standards to insure the highest quality and reliability
  • +/-40 MOA adjustment in both elevation and windage
  • Auto shut off feature: 10 hours if no movement.
  • Removable spacer to suits on low profile guns (Short screw included )
  • MODEL FC-1
    OPTIC TYPE Virtually Parallax free prism
    LENS DIMENSIONS 15mm x 21mm
    EYE RELIEF Unlimited
    1 CLICK 24 MM @ 100 M (DOT ONLY) / 1 MOA
    OVERALL DIMENSIONS 48 x 43 x 43 mm (L x W x H)
    WEIGHT 170 g(6 oz)  w/mount and battery
    BRIGHTNESS SETTINGS 14 ( 7 daylight, 7 night vision)
    STORAGE TEMP RANGE -41¡ã ~  71¡ã C, (-42¡ã ~ 160¡ã F)
    OPERATING TEMP RANGE -32¡ã ~ 71¡ã C, (-25.6¡ã ~ 160¡ã F)
    MIL SPEC CONFORMITY MIL-STD 810G Environment Testing
    SWITCH Push Button
    MOUNT MIL-STD 1913 Rail Optional quick disconnect
    MOTION SENSOR Built-In (Auto Shut-Off in 10 Hours)
    WATERPROOF Submersible up to 10 Feet.
    BATTERY LIFE Approx. 5000 Hrs (Mid Brightness Level)