The Maven RS4.2 5–30×56 FFP builds on the original RS.4 with upgraded controls for competitive shooting, precision applications and long-range hunting.
Its premium Japanese ED glass, 56 mm objective lens and approximately 91.84% light transmission provide a bright, detailed image with excellent contrast and accurate colour reproduction.
The first-focal-plane reticle changes size with the magnification, keeping its measurements accurate throughout the complete 5–30× range. Four reticle choices are available across matching MOA and MRAD configurations.
A three-revolution locking elevation turret provides extensive adjustment while helping prevent accidental movement. The capped windage turret protects the windage setting, while a tool-free mechanical zero stop provides a fast and repeatable return to the rifle’s original zero.
The etched-glass reticle offers four red and four green illumination levels. An automatic shut-off function helps preserve battery life.
Key features:
- 5–30× magnification range
- Large 56 mm objective lens
- First-focal-plane reticle
- Premium Japanese ED glass
- Approximately 91.84% light transmission
- 34 mm main tube
- Three-revolution locking elevation turret
- Capped windage turret
- Tool-free mechanical zero stop
- MOA and MRAD configurations available
- Four red illumination levels
- Four green illumination levels
- Automatic illumination shut-off
- Side parallax adjustment from 15 yards to infinity
- Etched-glass reticle
- Waterproof to a depth of 3 metres
- Nitrogen-purged and fogproof
- Durable anodised finish
- Made in Japan
- Maven lifetime warranty
- Neoprene protective cover included
Specifications:
- Manufacturer model: Maven RS4.2
- Magnification: 5–30×
- Objective lens diameter: 56 mm
- Focal plane: First focal plane
- Main tube diameter: 34 mm
- Reticle construction: Etched glass
- Illumination: Red and green
- Illumination levels: Four per colour
- MOA adjustment value: 0.25 MOA per click
- MRAD adjustment value: 0.1 MRAD per click
- MOA elevation travel: 120 MOA
- MRAD elevation travel: 35.5 MRAD
- MOA windage travel: 50 MOA
- MRAD windage travel: 20 MRAD
- Adjustment per turret revolution: 25 MOA or 10 MRAD
- Parallax adjustment: 15 yards to infinity
- Exit pupil: 8.9 mm at 5× and 1.9 mm at 30×
- Eye relief at 5×: 78–92 mm
- Eye relief at 30×: 86–92 mm
- Field of view at 100 yards: 23.3 ft at 5× and 3.9 ft at 30×
- Dioptre adjustment: ±3
- Overall length: 325 mm
- Weight without battery: 941 g
- Objective outer diameter: 65 mm
- Eyepiece outer diameter: 43.6 mm
- Front mounting length: 61 mm
- Rear mounting length: 42 mm
- Operating temperature: -20°C to 70°C
- Waterproof rating: 3 m
- Gas purging: Nitrogen
- Country of manufacture: Japan
Reticle options:
- SHR-W reticle with MOA adjustments
- MOA-2 reticle with MOA adjustments
- SHR-MIL reticle with MRAD adjustments
- CFR-MIL reticle with MRAD adjustments
Available colour options may include black or black-and-grey. Reticle and colour availability depends on the selected product variation.
Package includes:
- Maven RS4.2 5–30×56 FFP riflescope
- Neoprene protective scope cover
Please note:
A 34 mm mounting system or scope rings are required and are not included.
The RS4.2 should not be confused with the original RS.4. The RS4.2 adds a three-revolution locking elevation turret, capped windage, automatic illumination shut-off and a tool-free mechanical zero stop. It is also lighter than the original model.

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