Nikko Stirling MountMaster 4–12×50 HMD NMC41250N – 3/8″ Mounts
Nikko Stirling MountMaster 4–12×50 HMD NMC41250N – 3/8″ Mounts
- Brand:NIKKO STIRLING
- Product Code: MountMaster 4–12×50 HMD NMC41250N – монтаж 3/8″
- Availability: In Stock
74.00 € / 144.73 лв.
85.00 € / 166.25 лв.11 11 2026 02 12 2026
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Variable 4–12× magnification, a 50 mm objective lens and the classic Half Mil Dot reticle in a straightforward optical design. The Nikko Stirling MountMaster NMC41250N is a daylight riflescope featuring a one-inch tube, multicoated lenses and a protective matte-black finish.
The supplied 3/8″ (approximately 11 mm) mounting rings make this a practical package for compatible airgun and small-calibre sporting platforms. Mechanical adjustments operate in 1/4 MOA increments, while the black reticle requires no electronic illumination.
MountMaster 4–12×50 Half Mil Dot, model NMC41250N, combines a practical zoom range, a generous objective diameter and intuitive mechanical controls. At 4×, it provides a broader view of the surrounding scene. At 12×, distant details occupy a larger portion of the field of view.
The 50 mm objective lens gathers light, while multicoated optical surfaces help reduce unwanted reflections. The black Half Mil Dot reticle provides additional angular reference marks without the need for a battery.
The design features a factory-set parallax configuration and an adjustable eyepiece focus. This uncomplicated arrangement is suitable for users who prefer a riflescope without an additional parallax-adjustment ring.
A threefold zoom range allows a choice between a wider scene and a more detailed image according to the selected magnification.
A useful balance between objective size and observation capability under changing natural-light conditions.
The HMD crosshair features angular markings that support visual comparison of proportions within the image.
Anti-reflective coatings reduce some unwanted reflections and help improve image clarity and contrast.
Adjustment increments of 1/4 MOA correspond to an angular displacement of approximately 7.3 mm at 100 m.
A classic one-inch diameter with a matte-black finish and compatibility with suitable 1″ mounting rings.
Dry nitrogen helps reduce internal fogging, while the construction is designed to resist moisture and mechanical impact.
Two factory-supplied rings for a compatible narrow dovetail rail, eliminating the need for a separate ring set when the interface matches.
Half Mil Dot (HMD) is a reticle design incorporating additional marks along the horizontal and vertical crosshairs. Its name refers to half-milliradian intermediate references, which are useful for comparing angular dimensions within the observed image.
As with other optical reticles, the precise angular subtension at a given magnification must be established from the relevant factory calibration. Changing magnification also changes the apparent size of objects, so the same subtension should not automatically be assumed at every zoom setting.
This model has a non-illuminated reticle. No electronic module, illuminated colour options or battery are required.
The standard MountMaster optical configuration is operated through the magnification ring and eyepiece adjustment. Parallax is preset at the factory, without a separate adjustable objective (AO) ring or side-focus control.
Parallax describes an apparent movement between the reticle and target image when the observer's eye changes position behind the eyepiece. A consistent viewing position helps maintain a stable visual relationship between the two.
The eyepiece adjustment serves a different purpose: it adapts the sharpness of the reticle itself to the user's eyesight rather than changing the factory parallax setting.
4–12× indicates the variable magnification range. At lower magnification, a wider area of the scene is visible; at higher magnification, individual details appear larger. 50 mm is the nominal diameter of the front objective lens.
The ratio between objective diameter and magnification determines the geometric exit pupil: approximately 12.5 mm at 4× and 4.2 mm at 12×. These are calculated values, not measurements of actual light transmission.
Mechanical adjustments: the adjustment turrets operate in 1/4 MOA increments. MOA stands for minute of angle; 1/4 MOA corresponds to approximately 7.3 mm at 100 metres in ideal geometric terms. This describes the angular adjustment increment.
Multicoated lenses: the treatment of optical surfaces helps reduce reflections and supports visual contrast.
Nitrogen filling: dry nitrogen reduces the risk of internal condensation during temperature changes. The scope housing is constructed to resist moisture and normal mechanical stresses, but is not intended for submersion or severe impact.
The standard package includes two mounting rings for a 3/8″ rail, a common mounting profile on compatible air rifles and some small-calibre sporting platforms. This narrow rail is often described as an approximately 11 mm dovetail.
The mounting rings must have the correct internal diameter for a one-inch optical tube.
The supplied rings are designed for compatible narrow dovetail rails, not universal Picatinny or Weaver bases.
For a Picatinny or Weaver base, separately selected compatible rings for a 1″ tube are required. The ring height must also provide adequate clearance for the 50 mm objective and any protective lens caps.
The supplied mounting rings simplify setup on compatible equipment, provided the specific recoil characteristics have been checked.
The 4–12× range and classic HMD crosshair provide flexible optical viewing during lawful sporting activities.
The 50 mm objective and multicoated optics are practical features for viewing under natural-light conditions.
The mechanical design provides direct control of magnification, eyepiece focus and adjustment turrets.
Compare the NMC41250N designation on the packaging with the product and inspect the housing and lenses for visible damage.
Confirm that the rings fit the 1″ tube and that the mounting interface matches the specific 3/8″ rail.
Incompatible bases and excessive force may damage the scope tube or mounting hardware.
Use the eyepiece focusing control to obtain a clear reticle image suited to your individual vision.
Remove dust with an optical brush or blower before using a clean, soft microfiber lens cloth.
After rain or condensation, gently dry the exterior and leave the scope in a ventilated, dry environment.
Protect optical surfaces during transport and storage, avoiding excessive heat and aggressive chemicals.
Never look directly at the sun through an optical instrument. Use all equipment safely and in accordance with applicable laws.
| Specification | Value |
|---|---|
| Brand | Nikko Stirling |
| Series | MountMaster |
| Model | 4–12×50 Half Mil Dot |
| Manufacturer code | NMC41250N |
| Barcode / EAN | 9420001435525 |
| Product type | Daylight riflescope |
| Magnification | 4–12× |
| Objective diameter | 50 mm |
| Reticle | HMD · Half Mil Dot |
| Focal plane | Second focal plane · SFP |
| Reticle illumination | No · non-illuminated |
| Adjustable objective / AO | No · factory-set parallax |
| Eyepiece adjustment | Adjustable eyepiece focus |
| Adjustment increment | 1/4 MOA per click · approx. 7.3 mm at 100 m |
| Adjustment range | 30 MOA · elevation and windage |
| Main tube diameter | 1″ / 25.4 mm |
| Lens coatings | Multicoated anti-reflective optics |
| Internal filling | Dry nitrogen |
| Water resistance | Yes · according to the series design |
| Internal fog protection | Yes · nitrogen filling |
| Shock resistance | Yes · within the series' intended applications |
| Exterior finish | Matte black |
| Mounting rings | Included · for 3/8″ / approx. 11 mm rail |
| Protective lens caps | Included |
| Manufacturer warranty programme | Nikko Stirling Lifetime Warranty for the original owner, subject to registration and official terms |
The factory package of the Nikko Stirling MountMaster 4–12×50 Half Mil Dot (NMC41250N) contains the riflescope with a non-illuminated HMD reticle, two mounting rings for a 3/8″ rail and protective lens caps.
Picatinny/Weaver mounting hardware, alternative rings and the platform on which the scope is to be installed are selected separately. Additional documentation is supplied according to the original manufacturer's packaging.
Nikko Stirling offers a Lifetime Warranty programme for its riflescopes. This manufacturer's programme applies to the original owner, requires product registration and is governed by the official terms and conditions.
Proof of the original purchase may be requested for warranty service. Misuse, abuse and unauthorised repairs are excluded. Where a claim is accepted, the manufacturer determines whether to repair the product or replace it with a comparable item.
The manufacturer's voluntary warranty does not limit statutory consumer rights.
NMC41250N – the Nikko Stirling MountMaster 4–12×50 with a non-illuminated Half Mil Dot reticle and included 3/8″ mounting rings.
Variable magnification from 4× to 12×, offering a threefold zoom range.
This configuration uses a factory-set parallax arrangement and does not have a separate AO adjustment ring.
Half Mil Dot (HMD) – a traditional crosshair with additional angular reference markings.
No. The reticle is non-illuminated and requires no battery.
1 inch / 25.4 mm, suitable for compatible one-inch mounting rings.
Two rings for a compatible 3/8″ rail, approximately 11 mm, using a dovetail-type interface.
Not directly. Picatinny or Weaver bases require separately selected compatible 1″ mounting rings.
1/4 MOA, corresponding to approximately 7.3 mm at 100 metres.
Yes. The series features water-resistant construction and dry nitrogen filling to help reduce internal condensation.
The scope, 3/8″ mounting rings and protective lens caps.
Nikko Stirling offers a lifetime manufacturer warranty programme for the original owner, subject to registration and the official terms.
Contact the MoskovHunt team for availability, information about NMC41250N, compatibility of the supplied 3/8″ rings and details of the Nikko Stirling warranty programme.
MoskovHunt · 37 Tsar Simeon Street, 5900 Levski, Bulgaria.
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