Catalog

KEY-303

The KEY-303 is a 45-degree offset flip-up sight system designed to improve close range target acquisition without interfering with your primary optic. Engineered for quick transitions and optimal ergonomics in tactical scenarios, the KEY-303 maintains a low profile and integrates seamlessly with any standard Picatinny rail. A secondary sighting system allows continued use even when the sights are folded, while finger adjustable controls make on-the-fly changes simple and tool-free.

Colors

45° Angle

Usage Area: Picatinny Rail

Key Features

  • 45-Degree Offset Design: Enhances visibility and quick access for close-quarter engagements, especially when paired with magnified optics.
  • Secondary Sight Functionality: Integrated sighting channel allows targeting even when the sight is folded down.
  • Low-Profile Fit: Compact design stays out of the way when not in use, minimizing snag risks.
  • Tool-Free Adjustments: Finger-adjustable settings allow quick windage/elevation tweaks without tools.
  • Picatinny Compatibility: Mounts directly onto standard Picatinny rails for fast, secure installation.

Technical Specifications

  • Material: Polymer
  • Weight: 0.052 kg
 Rear Sight Length Width Height
Deployed Dimensions 5.32 cm 5.78 cm 1.23 cm
Folded Dimensions 2.78 cm 5.78 cm 3.65 cm
Base Height 4.69 cm
Weight 28 gr

 

 Front Sight Length Width Height
Deployed Dimensions 5.32 cm 5.60 cm 1.23 cm
Folded Dimensions 2.76 cm 5.60 cm 3.65 cm
Base Height 4.56 cm
Weight 24 gr

Elevation & Windage Adjustments

  • Rear Sight – Windage Adjustment
    • ~0.7 MOA (0.754″/100 m) per click – 14.5″ sight radius
    • ~0.5 MOA (0.547″/100 m) per click – 20″ sight radius
  • Front Sight – Elevation Adjustment
    • ~0.64 MOA (0.754″/100 m) per click – 14.5″ sight radius
    • ~0.48 MOA (0.547″/100 m) per click – 20″ sight radius

Other Products