Nikko Stirling Diamond Illuminated Rifle Scope 3-9×42 30mm #4 Dot
The Nikko Stirling Diamond 3-9×42 is an illuminated rifle scope with a 30mm tube and an illuminated #4 Dot reticle. Field of view is 12.8m at 100m on 3x and 4.3m on 9x, with eye relief of 100mm to 85mm across the zoom range. The body uses CNC machined parts made to tight tolerances and aircraft approved aluminium, with high grade optical lens coatings for light transmission. Low profile, fast finger adjustable dials handle windage and elevation, and a rubber enhanced zoom ring and speed focus eyepiece make it quick to set up. Adjustments are 7mm at 100m per click with 60 MOA of elevation and windage travel. The scope is 310mm long and weighs 539g.
Specifications
| Feature | Value |
|---|---|
| Zoom Range | 3-9x |
| Objective Lens Diameter | 42mm |
| Reticle Type | #4 Dot |
| Field of View (3x) | 12.8m at 100m |
| Field of View (9x) | 4.3m at 100m |
| Eye Relief | 100mm to 85mm |
| Adjustment per Click (Elevation/Windage) | 7mm at 100m |
| Elevation Travel | 60 MOA |
| Windage Travel | 60 MOA |
| Tube Diameter | 30mm |
| Length | 310mm |
| Weight | 539g |
| Material | CNC machined, aircraft approved aluminium |
| Optical Coatings | High grade lens coatings for light transmission |
FAQ
What is the field of view at 3x magnification?
The field of view at 3x magnification is 12.8 meters at 100 meters.
How much elevation and windage adjustment does the scope offer?
The scope offers 60 MOA of elevation and windage travel, with 7mm of adjustment per click at 100 meters.
Is the reticle illuminated?
Yes, the scope features an illuminated #4 Dot reticle.

Keith Thomson –
I bought this scope for hunting and it performs well in low light. The illuminated reticle helps a lot during dawn and dusk. The adjustments are smooth and the focus is quick. It’s durable and the build feels solid.
Austin Alsop –
Good optics and reliable performance in the field. The eye relief is comfortable and the zoom ring is easy to use. A bit heavy for long carry, but overall solid for its price.
Andrew Walsh –
The clarity and brightness are excellent. The #4 dot reticle is easy to see even in dim conditions. I appreciate the fast finger dials and the rubberized zoom ring for grip.