Nikko Stirling Mountmaster AO IR Riflescope
The Nikko Stirling Mountmaster AO IR is a riflescope designed for close-range shooting, offering adjustable focus and parallax correction down to 10 yards. This makes it ideal for hunting small game with an air rifle or .22 caliber, where target distances vary between shots and precise focus at short range is essential.
Equipped with a robust 3/8-inch dovetail mount ring, the scope features a recoil stop screw to maintain stability under the recoil of spring or gas-piston air rifles. Windage and elevation adjustments are made via finger-friendly bezels, finished in matte black for a discreet, field-ready appearance.
The scope comes pre-fitted with an illuminated Mil Dot reticle, providing clear aiming reference in low-light conditions.
| Specification | Detail |
|---|---|
| Focus Range | 10 yards |
| Parallax Adjustment | Adjustable to 10 yards |
| Mount Type | 3/8-inch dovetail |
| Reticle | Illuminated Mil Dot |
| Adjustment Type | Windage and elevation via bezels |
| Finish | Matte black |
FAQ
Can this scope be used for hunting small game with a .22 air rifle?
Yes, the Mountmaster AO IR is specifically designed for close-range shooting and is well-suited for hunting small game with a .22 air rifle due to its adjustable focus and parallax correction down to 10 yards.
Does the scope include a recoil stop feature?
Yes, the scope features a recoil stop screw to help keep the mount stable during firing, especially with spring or gas-piston air rifles.
What type of reticle does it have?
The scope comes with an illuminated Mil Dot reticle, which improves visibility and accuracy in low-light conditions.

Thomas Dickens –
I use this scope for small game hunting with my .22 air rifle. The ability to adjust focus down to 10 yards makes a big difference when targets are close and unpredictable. The matte black finish blends well in the field, and the illuminated reticle helps during early morning or dusk shots. Very reliable and easy to adjust.
Deirdre Harris –
Great for short-range shooting. The parallax adjustment is a big plus when hunting in variable distances. The recoil stop keeps the scope steady after each shot. A bit heavy for casual use, but worth it for precision work.
Michael Vance –
Perfect for my air rifle setup. The focus adjustment down to 10 yards is exactly what I needed. The windage and elevation knobs are easy to turn with gloves on. Reticle is bright and clear in low light. Satisfied with the build quality and performance.