| Brand | Holosun |
| Category | Red Dot Scopes |
| Model | HS403R |
| Color | Black Anodized |
| Magnification | 1x |
| Material | Aluminum |
| Proofs | Impact / Weather Resistant / Waterproof |
| Firearm Type | Rifle / Carbine |
| Reticle | Red Dot |
| Tube Diameter | 20mm |
| Windage Adjustment | 50 MOA |
| Battery | CR2032 |
| Length | 2.75" |
| Adjustment Size | .50 MOA |
| Battery Life | 100,000+ hrs |
| Brightness Settings | 10 Day / 2 Night |
| Bulb Type | LED |
| Dot Size | 2 MOA |
| Elevation Adjustment | 50 MOA |
| Eye Relief | Unlimited |
| Field of View | Unlimited |
| Height | 2.70" |
| Includes | Battery / Cover / Lens Cloth / Mounts / T10 L Key |
| Mount Type | Lower 1 / 3 Co-Witness |
| Optic Coating | Multi-Coated |
| Parallax Adjustment | Parallax Free |
| Wavelength | 650nM |
| Weight | 3.53 oz |
| Windage Elevation | Adjustable |
