Nikko Stirling OCTA 2–16×50 NSOC21650 Illuminated Riflescope

Nikko Stirling OCTA 2–16×50 NSOC21650 Illuminated Riflescope
Nikko Stirling OCTA 2–16×50 NSOC21650 Illuminated Riflescope
Nikko Stirling OCTA 2–16×50 NSOC21650 Illuminated Riflescope
Nikko Stirling OCTA 2–16×50 NSOC21650 Illuminated Riflescope

Nikko Stirling OCTA 2–16×50 NSOC21650 Illuminated Riflescope

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  • Brand:NIKKO STIRLING
  • Product Code: OCTA 2–16×50 NSOC21650 – 8× Zoom, IR
  • Availability: In Stock

  • 560.00 € / 1,095.26 лв.

    639.00 € / 1,249.78 лв.
  • 07 11 2026 06 12 2026

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13 x €50.40

NIKKO STIRLING · OCTA 8× ZOOM · NSOC21650
Nikko Stirling OCTA 2–16×50 Riflescope – 30 mm Tube, Illuminated No. 4 Dot

From a wide overview at 2× to finely detailed images at 16× — all in one riflescope with an 8× zoom ratio. The Nikko Stirling OCTA 2–16×50 combines a 50 mm objective, fully multicoated optics, an illuminated glass reticle and side parallax adjustment.

With a 21.1 m field of view at 100 m at its lowest magnification, 1/4 MOA adjustment clicks and conventional hunting turrets, it suits users who value both broad situational visibility and the ability to examine distant details at higher magnification.

OCTA NSOC21650: 2–16× · 8× zoom · 50 mm objective · 30 mm tube · illuminated No. 4 Dot · side parallax · 1/4 MOA.
Official Nikko Stirling OCTA 2-16x50 NSOC21650 riflescope image with illuminated reticle and side parallax adjustment Official product photography · Nikko Stirling OCTA 2–16×50
2–16×Variable magnification
8×Zoom ratio
21.1 mField of view at 2× / 100 m
30 mmMain tube diameter
OCTA 2–16×50 – one riflescope, a remarkable range of possibilities

Nikko Stirling OCTA 2–16×50 (NSOC21650) is a daytime riflescope with an illuminated reticle designed for hunting and sporting applications. The ratio between minimum and maximum magnification is 8:1 — the defining feature behind the OCTA series name.

At 2×, its wide field of view offers an excellent overview of the surrounding area. At 16×, smaller details can be examined without changing optics. The 50 mm objective and Fully Multicoated lens system complement that versatility by controlling reflections and maintaining image contrast.

Another important feature is side parallax adjustment. It allows the observed image to be focused for different distances and helps reduce the apparent displacement between the reticle and the viewed object when the position of the eye changes.

Eight key advantages of Nikko Stirling OCTA
01 · 8× ZOOM
Outstanding 2–16× magnification range

Switch from a general overview to a magnification eight times higher than the minimum setting.

02 · 50 MM OBJECTIVE
50 mm objective lens

A practical balance of optical performance, light-gathering aperture and overall size.

03 · SIDE PARALLAX
Side parallax adjustment

A convenient central control for adapting focus to observations at different distances.

04 · GLASS RETICLE
No. 4 Dot glass reticle

Classic geometry with fine central lines and readily identifiable outer reference bars.

05 · ILLUMINATION
Illuminated central reference

Adjustable illumination for comfortable visibility of the central dot in varying light.

06 · FULLY MULTICOATED
Multilayer optical coatings

Anti-reflective lens treatment to support efficient light transmission and image contrast.

07 · 1/4 MOA
Fine mechanical adjustments

Hunting turrets with a click value equivalent to approximately 7 mm at 100 m.

08 · 30 MM / OUTDOOR
Durable 30 mm construction

Waterproof, shockproof construction compatible with suitable 30 mm scope rings.

What does an 8× zoom ratio mean for OCTA?

8× zoom describes the ratio between maximum and minimum magnification: 16 ÷ 2 = 8. It does not mean the scope is fixed at 8×. Instead, you can choose magnification smoothly from 2× to 16×.

2×: a wide overview and easier orientation within the observed surroundings. Mid-range settings: a balance between visible area and fine detail. 16×: a much larger view of smaller or more distant objects, accompanied by a narrower field of view.

Field of view – from 21.1 to 2.6 metres at 100 m

FOV (Field of View) describes the width of the area visible through the riflescope at a given distance. OCTA 2–16×50 offers a notably broad view at its minimum magnification.

21.1 mAt 2× / distance 100 m
2.6 mAt 16× / distance 100 m
8×Zoom ratio
No. 4 Dot – a glass hunting reticle with an illuminated centre

The No. 4 Dot reticle combines prominent outer reference bars with a fine central area. Its basic markings are formed on glass, so the reticle remains visible even with the illumination switched off. The illuminated centre supplements the optical reticle rather than replacing it.

NO. 4 DOT · GLASS RETICLE
A clean, easy-to-read central area
  • Glass reticle: clearly defined references without needing active illumination.
  • Illuminated central dot: an additional visual cue in changing light.
  • Fine central lines: preserve visibility of details around the centre.
  • Bold outer bars: characteristic geometry of traditional hunting reticles.

Use only enough brightness to make the central dot clearly visible. Excessive illumination at dusk can reduce viewing comfort.

Schematic illustration of the No. 4 Dot type; proportions are not to scale.
Side parallax adjustment – an important functional advantage

Side Parallax Adjustment uses a side-mounted control on the central section of the scope. On the OCTA 2–16×50, this enables the observed image to be brought into focus at different distances.

Parallax is an optical effect in which the reticle appears to shift slightly relative to the subject when the eye moves sideways. When the image and reticle are correctly aligned in the optical system, that apparent shift is reduced.

Side FocusSide-mounted adjustment
2–16×Works across the zoom range
50 mmFully multicoated objective
Important: the parallax control and eyepiece focus have different purposes. Eyepiece focus makes the reticle sharp for your eyesight; the side adjustment focuses the observed image and reduces the parallax effect.
Fully Multicoated – managing light through the optical system

Fully Multicoated means that optical surfaces receive multiple layers of anti-reflective treatment. When light passes through several glass elements, reflections occur; these specialised coatings help reduce them and preserve perceived contrast.

Combined with the 50 mm objective, the coatings contribute to detailed viewing under different natural lighting conditions. Actual perceived brightness also depends on magnification, the environment and individual eyesight.

Practical insight: at lower magnification the image will generally appear brighter, while at high magnification the available light is spread over a larger apparent image.
Mechanical adjustments – 1/4 MOA per click

The OCTA hunting turrets allow elevation and windage adjustments in nominal 1/4 MOA increments. MOA (Minute of Angle) is an angular unit. One click corresponds to approximately 7 mm at 100 m.

1/4 MOAClick value
40 MOAElevation range
40 MOAWindage range

The stated adjustment range is 40 MOA for elevation and 40 MOA for windage. Click value specifies the mechanism's adjustment step, not a guaranteed shooting accuracy figure.

User guide – preparing the scope correctly
01
Eyepiece focusing

Glance briefly at a bright, neutral background and adjust the diopter ring until the reticle lines look sharp and well defined.

02
Choosing magnification

Start at a lower setting for a broad overview and increase magnification gradually when more image detail is needed.

03
Parallax adjustment

Adjust the side control until the image is clear; check whether the reticle appears to shift as your eye moves slightly.

04
Reticle illumination

Choose moderate brightness for ambient light. Switch illumination off after use to conserve battery power.

05
Mounting and checking

Use 30 mm rings of suitable height. Tighten according to the mount manufacturer's instructions without excessive force.

06
After-use care

Remove dust before wiping the lenses. Dry the body and store the scope with its optical surfaces protected.

Safety: never look directly at the sun through the scope. When handling a mounted firearm, always observe all applicable firearm safety rules. Professional mounting and inspection are recommended.
Mounting and compatibility – 30 mm tube
30 MM MAINTUBE
Choosing the right rings

Ring inner diameter must be 30 mm, and the attachment interface must match the mounting system.

50 MM OBJECTIVE
Adequate clearance

Allow for the objective diameter, clearance above the barrel and a comfortable eyepiece position.

Recommendation: do not overtighten the scope rings. Excessive torque can damage the tube and affect the performance of the optic.
Who is the OCTA 2–16×50 suitable for?
VERSATILE HUNTING OPTICS
Wide overview and fine detail

The 2–16× range appeals to users who prefer not to be restricted to a narrow magnification interval.

VARIED OBSERVATION DISTANCES
Flexible parallax control

Side focus is useful when distances change and sharply defined image detail is needed.

CLASSIC HUNTING RETICLE
For enthusiasts of the No. 4 Dot

The fine illuminated centre and familiar geometry offer a clean visual reference.

SPORTING APPLICATIONS
For permitted sporting use

The optical system and mechanical controls can be considered when choosing equipment for lawful sporting disciplines.

Technical specifications – OCTA 2–16×50 NSOC21650
SpecificationDetails
ManufacturerNikko Stirling
SeriesOCTA · 8× Zoom
ModelOCTA 2–16×50
Product codeNSOC21650
TypeDaytime riflescope with illuminated reticle
Magnification2–16×
Zoom ratio8×
Objective diameter50 mm
Main tube30 mm
Field of view at 2×21.1 m at 100 m
Field of view at 16×2.6 m at 100 m
ReticleNo. 4 Dot
Reticle constructionGlass Reticle · etched on glass
Illuminated reticleYes, adjustable
Illumination batteryCR2032
Lens coatingsFully Multicoated
Adjustment turretsHunting Turrets
Click value1/4 MOA (approx. 7 mm at 100 m)
Elevation adjustment range40 MOA
Windage adjustment range40 MOA
Parallax adjustmentYes, side control (Side Focus)
Eyepiece focusFast Focus
Eye reliefApproximately 90 mm
Overall lengthApproximately 352 mm
WaterproofYes
ShockproofYes
Fog-resistant constructionYes
Mounting diameter30 mm
Intended useHunting and sporting optics
What is included in the package?
  • Nikko Stirling OCTA 2–16×50 riflescope, NSOC21650.
  • Protective lens covers.
  • Optical lens cleaning cloth.
  • CR2032 battery for the illuminated reticle.
  • Accompanying user instructions.

Mounting rings and bases are selected for the specific rifle and are not part of the standard mounting configuration. Contact MoskovHunt to confirm the contents of the currently available factory package.

Nikko Stirling lifetime warranty programme

Nikko Stirling riflescopes are covered by a manufacturer's lifetime warranty programme intended for the original owner. Product registration is required and proof of purchase may be requested when making a claim.

  • Optical and mechanical components: lifetime manufacturer's coverage subject to the applicable conditions.
  • Electronic components: a separate five-year warranty period.
  • Exclusions: improper use, misuse and unauthorised repairs are not covered.
  • Statutory protection: consumer rights under applicable law remain unaffected.
Explore more at MoskovHunt

Discover more Nikko Stirling riflescopes, compatible 30 mm rings and mounting solutions for different hunting rifles.

NIKKO STIRLINGMore products from the brand RIFLESCOPESDaytime sights and illuminated reticles MOUNTS & ACCESSORIESScope rings and mounting bases
Instalment financing through TBI Bank

Financing through TBI Bank may be available for the Nikko Stirling OCTA 2–16×50, depending on the current offer and individual credit approval.

The repayment period, monthly instalments, interest rate, APR and total amount payable are determined by the bank's specific offer. Promotional prices and special financing plans apply according to current conditions and are not automatically combinable.

Practical assistance: the MoskovHunt team can provide information about current instalment options, product availability and suitable mounting solutions.
Frequently asked questions – Nikko Stirling OCTA 2–16×50
What is the exact product code?

NSOC21650, from the Nikko Stirling OCTA 8× Zoom series.

What field of view does it offer at 100 metres?

21.1 m at 2× and 2.6 m at 16× magnification.

Which reticle does it feature?

Glass No. 4 Dot reticle with adjustable central illumination.

Does it have side parallax adjustment?

Yes. OCTA NSOC21650 has a Side Focus control for different viewing distances.

What is the click adjustment value?

1/4 MOA, approximately 7 mm at 100 m.

What is the total adjustment range?

40 MOA in elevation and 40 MOA in windage.

Which mounting rings are required?

30 mm rings selected for the mounting base and suitable objective clearance.

What warranty does it have?

Lifetime manufacturer's programme for the original registered owner under its terms; five years for electronic components.

Is instalment financing available?

TBI Bank financing may be available, subject to the current product offer and credit approval.

Nikko Stirling OCTA 2–16×50 at MoskovHunt

Contact us for expert advice about the exact NSOC21650 model, selecting a compatible 30 mm mount, adjusting parallax, current stock availability, warranty and financing options.

089 446 2621 · Viber / WhatsApp
089 681 1177 · Viber / WhatsApp
gmoskov@mail.bg

MoskovHunt · 37 Tsar Simeon Street, 5900 Levski, Bulgaria.



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