

The Nikko Stirling Mountmaster 3-9x40 Riflescope offers reliable performance, practical features and excellent value for recreational shooting and target practice. Supplied with 5/8-inch Weaver mounting rings, this versatile riflescope is designed for straightforward installation on compatible Weaver mounting systems.
Featuring variable 3-9x magnification and a 40mm objective lens, the Mountmaster provides flexibility for shooting at different distances. Its Half Mil Dot (HMD) reticle incorporates evenly spaced aiming reference points, assisting with holdover and aiming adjustments at varying ranges.
Designed with durability and ease of use in mind, the Mountmaster features a practical adjustment system for windage and elevation, making it a suitable choice for shooters seeking an affordable, functional riflescope.
Key Features
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3-9x Variable Magnification: Adjustable magnification for different shooting distances and applications.
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40mm Objective Lens: Provides a practical balance between light collection and compact dimensions.
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Half Mil Dot Reticle: Features additional aiming reference points for holdover and distance-related adjustments.
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5/8-inch Weaver Mounts Included: Supplied with mounting rings for compatible Weaver mounting systems.
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Adjustable Windage and Elevation: Allows shooters to make adjustments to their point of impact.
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Versatile Application: Suitable for recreational target shooting and compatible air rifles and firearms.
| Specification | Details |
|---|---|
| Brand | Nikko Stirling |
| Product Series | Mountmaster |
| Model / SKU | NMC3940W |
| Barcode (EAN-13) | 9420008964042 |
| Product Type | Riflescope |
| Magnification | 3–9x |
| Objective Lens Diameter | 40 mm |
| Reticle Type | Half Mil Dot (HMD) |
| Mounting System | Weaver |
| Supplied Mounts | 5/8-inch Weaver rings |
| Main Tube Diameter | 1 inch (25.4 mm) |
| Adjustment Increment | 1/4 MOA |
| Windage Adjustment | Finger-adjustable turrets |
| Elevation Adjustment | Finger-adjustable turrets |
| Lens Coating | Multicoated |
| Nitrogen Filled | Yes |
| Waterproof | Yes |
| Fogproof | Yes |
| Shock Tested | Yes |
| Finish | Matte Black |
| Country of Manufacture | China |
| Included Accessories | 5/8-inch Weaver mounting rings |






















































































