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DI Optical

DI OPTICAL FC1 2 MOA Red Dot Sight

DI OPTICAL FC1 2 MOA Red Dot Sight

Availability: In stock




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.

MSRP: $49


  • 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
  • 200 MOA adjustment in both elevation and windage
  • Submersible to 30 ft.
OPTIC TYPE Virtually Parallax free prism
EYE RELIEF Unlimited
1 CLICK 24 MM @ 100 M (DOT ONLY) / 1 MOA
OVERALL DIMENSIONS 50 x 40 x 35 mm (L x W x H)
WEIGHT 170 g  w/mount
BRIGHTNESS SETTINGS 14 ( 7 daylight, 7 night vision)
STORAGE TEMP RANGE -41° ~  71° C, (-42° ~ 160° F)
OPERATING TEMP RANGE -32° ~ 71° C, (-25.6° ~ 160° 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 30 Min)
WATERPROOF Submersible to 30 ft.
BATTERY LIFE Approx. 2000 Hrs (Brightness Level 5)



Additional Info

Additional Info

Manufacturer DI Optical
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No


Customer Reviews (1)

This optic is well manufactured, BUT...Review by
As it is supposed to be manufactured to military specs, I expected a stoutly made, solid optic with a durable case and a bright, clear dot. I got everything, however, the dot would not center and stay on target. It was, for all attempts, impossible to sight in the optic. Every time I got close, the dot would shift off center.
I sighted in the open sights, which were right on the money, and then moved the dot to the top of the front sight, hoping this short cut would at least get me on paper.
It did not. Not only did the bullet not strike anywhere close to my expected target location, but the dot moved off center after the shot was made. After looking more closely at the sight, the dot then returned to the center of the screen.
Needless to say, this one is going back...
(Posted on 2/21/2017)

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