Nikko Stirling MountMaster AO 4×32 Rifle Scope
A fixed power, one inch rifle scope featuring an adjustable objective (AO) and a Half Mil Dot (HMD) reticle. The scope offers parallax adjustment on the objective bell from 10 yards to infinity, enhancing accuracy across varying distances.
Constructed with a one inch matte black alloy tube and multi-coated lenses, the scope is waterproof, fogproof, shockproof, and nitrogen filled for reliable performance in harsh environments.
Windage and elevation adjustments are made in 1/4 MOA steps (7mm at 100m), providing precise fine-tuning for shooting accuracy.
| Specification | Detail |
|---|---|
| Optical Power | 4×32 |
| Reticle Type | Half Mil Dot (HMD) |
| Parallax Adjustment | 10 yards to infinity |
| Tube Material | Matte black alloy |
| Coating | Multi-coated lenses |
| Environmental Protection | Waterproof, fogproof, shockproof, nitrogen filled |
| Adjustment Steps | 1/4 MOA (7mm at 100m) |
FAQ
What is the parallax adjustment range of this scope?
The parallax adjustment range is from 10 yards to infinity.
Is the scope suitable for use in adverse weather conditions?
Yes, the scope is waterproof, fogproof, and shockproof, making it suitable for use in adverse weather conditions.
Can the windage and elevation be adjusted precisely?
Yes, windage and elevation can be adjusted in 1/4 MOA steps, equivalent to 7mm at 100m, allowing for precise fine-tuning.

Joe Fisher –
The scope is very stable and the HMD reticle makes aiming easier in the field. The parallax adjustment helps with accuracy at different distances. It’s built to last and performs well in rain and cold weather.
Eric James –
Good optical clarity and solid build quality. The 4×32 magnification is ideal for medium-range shooting. The windage and elevation adjustments are smooth and precise.
Julia Hughes –
I’ve used this scope in several outdoor shooting sessions. The multi-coated lenses reduce glare, and the nitrogen fill keeps everything sealed. Very reliable in changing conditions.
Olivia Knox –
The one-inch alloy tube feels sturdy and the reticle is easy to read. Parallax adjustment is useful when shooting at varying ranges. Slightly heavier than expected, but worth it for durability.