Nikko Stirling MountMaster AO Rifle Scope 6×40 One Inch HMD
The Nikko Stirling MountMaster AO 6×40 is a fixed power, one inch rifle scope with an adjustable objective (AO) and a Half Mil Dot (HMD) reticle. Across the MountMaster range, AO models have parallax adjustment on the objective bell from 10 yards to infinity.
The scope features a one inch matte black alloy tube with multi-coated lenses, providing clear visibility in various lighting conditions. It is waterproof, fogproof, and shockproof, and is nitrogen filled for long-term reliability.
Windage and elevation adjustments are made in 1/4 MOA steps (7mm at 100m), offering precise aiming control.
| Specification | Detail |
|---|---|
| Optical Power | 6x |
| Objective Diameter | 40mm |
| 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 the MountMaster AO scope?
The parallax adjustment range is from 10 yards to infinity.
Is the scope waterproof and fogproof?
Yes, the scope is waterproof, fogproof, and shockproof, and is nitrogen filled.
What type of reticle does this scope have?
The scope features a Half Mil Dot (HMD) reticle.
Adam Parsons –
The scope performs well in various lighting conditions. The HMD reticle is easy to align and the parallax adjustment helps with accuracy at different distances. The build feels solid and the multi-coated lenses reduce glare.
Grace Robertson –
I’ve used this scope on several hunting trips. The windage and elevation adjustments are precise. The waterproof design is a big plus in wet weather. Only minor issue is the initial setup of the parallax adjustment.
Michael Vance –
Great value for the features. The one-inch tube is sturdy and the optics are sharp. The nitrogen fill ensures no fogging during cold weather use. Works well with my rifle for both target and field shooting.