Main Description

Nikko Stirling Mountmaster 4-12x50 Parallax AO Rifle Scope Half Mil dot - with 9mm - 3/8" - 13mm dovetail base Mount Rings - Nikko code NMM41250AO

Non UK buyers please READ -
There are some simple UK export rules for sales of telescopic scopes of 10x or more maximum magnification. If you live in the EU or one of the following it is simple, quick and easy - Australia, Canada, Chile, Falklands, Faroes, Greenland, Hong Kong, Iceland, India, Japan, Macedonia, Malaysia, New Caledonia, New Zealand, Norway, South Africa, Switzerland and the USA. We email you a simple paper for signature. You sign it and email or post back and we can ship right away. Most other areas it is still simple but there will be a delay. See bottom of page for more details

Mounts to fit it onto a rifle included
Nikko Match Rings to fit 3/8"-13mm (9-13mm) width dovetail grooved air gun type base are supplied. They are factory fitted so can't be swapped out for another type. If you need, for example, 18-22mm weaver mounts then you will need to buy them in addition to the scope. If you have rings already and are unsure if they will fit then what is needed are medium mounts with 25mm ring. If unsure what you need then measure across between the grooves on top of your rifle or ask us if unsure.

This is a superb top manufacturer scope - at a budget price.

>>> Half Mil Dot reticle for reliable and effective range estimating.

>>> 25mm/1 inch tube with multi coated lenses giving you huge light transmission and wonderful visual clarity

>>> Ideal for air rifles and rimfire .17, .22

Full size 1 piece 25mm tube
Waterproof - Shockproof - Fogproof - Recoil proof
Nitrogen filled and sealed tube
Crystal clear vision through fully multi emerald coated camera quality lenses
Exceptional focus clarity at all ranges
Parallax adjustable from 15 yards to infinity gives you much easier and faster focus at a variety of ranges.

Genuine Nikko Stirling rifle scope. UK importer supplied with UK warranty.

Half Mil Dot Reticle

Developed by US Marine snipers in the 1970's the mil dot is one of the most popular all round hunting cross hairs types. Half mil dot has simply added half way dashes in order to offer even more reference points.

Mil dot is very popular in all areas of shooting, once you get the hang of it you can easily and quickly estimate ranges to targets and set aim points.

50mm Fully Multi Coated Lens:

A great large size lens that gives you superb light capture and transmission resulting in a truly excellent view.
Fast target acquisition and moving target tracking.
Fully multi coated with emerald to protect and limit glare and reflections

4-12x variable magnification

A very flexible and popular all round variable magnification that is especially well suited to air rifle and hunting rifle shooting ranges.
Very easy and very fast dial adjustment.
Exceptional clarity through premium A grade camera quality lens.

You'll get crystal clear ocular focus at 5 yards with parallax focus from 15 yards.

Zero it with Windage and Elevation Turrets:

Windage/elevation target turrets with finger click adjustment.

140 click range (1/4 MOA)

Parallax Focus Adjustment - AO - Adjustable Objective (front lens casing)

Parallax effect is the term that describes the difference in angles between objects that are seen up close and those seen far away. When you look at telephone poles passing by on the side of the road, those closest to your car seem to pass very fast, while the ones far away seem to go very slow. That difference is due to the parallax effect.

The reticle in your scope is like a telephone pole that's very close. If you move your head on the stock while watching the target through the scope the reticle may seem to move, wobble or blur against the target. That affects where you perceive the aim point to be, and that affects your accuracy. Parallax focus correction adjustment reduces this phenomenon to the greatest extent possible.

Parallax focus correction therefore is a must for anyone attempting to use either a high magnification scope, shooting drastically different yardages with the same scope or anyone attempting to shoot at extremely close ranges or extremely long ranges. Especially so if it is a combination of these factors.

Parallax yard settings from 15 yards to infinity - Adjusted by the objective i.e., it is an AO "Adjustable Objective" scope.

Important note on parallax focus versus regular ocular focus

A common mistake is to use the parallax adjustment in an attempt to focus the reticle. The ocular end (eye piece) has a focus for the reticle. That is the sole purpose of the ocular focus. Returns have been caused by users attempting to use the reticle focus as an image focus and or using the parallax adjustment as a reticle focus. If you get both of them so far out of whack bad things will happen.

Only use the ocular focus to focus the reticle and only focus the reticle while looking through the scope at the sky. This will keep you from trying to focus an object instead of the reticle.

Ocular Focus (eyepiece) adjusts the scope to the individual shooter's eye... this is a one time adjustment. (For wearers of prescription lenses this could be a multiple procedure event if new prescription arrive.) The purpose of this adjustment is to adjust the scope so that the image of the reticle (crosshairs) is properly aligned with the back of the shooters eye.

Parallax focus adjusts the target to the reticle (crosshair). The target image and the reticle must be on the same focal plane within the scope or there is room for apparent movement of the reticle on the target when the shooters eye moves (or is positioned differently at the scope).

Data

Magnification 4-12
Obj. Diameter (mm) 50
FOV m at 100m - 3.2-9.6
FOV ft at 100ft 9.6-28.8
Click Value mm at 100m: 7mm - 1/4 MOA
E/W range (MOA) 30
Eye Relief (mm) 85 / 3.3"
Tube Diameter: 25mm - 1 inch
Length: 333mm / 13.1"
Weight: 403 grams / 14.2oz
Parallax (m) 15 yards to infinity
Illuminated Reticle - No
Reticle - Half mil dot

Dimensions -. cm / inches

A - 33.3 / 13.1
B - 13.6 / 5.35
C - 5.4 / 2.2
D - 5.15 / 2.0
E - 8.8 / 3.5
F - 10.9 / 4.3
G - 6.3 / 2.5
H - 4.2 / 1.65
I - 2.54 / 1

Shipping & Delivery Info

About Us - See link top of page
Payment methods & Terms of sale - See link top of page
Problems - Returns - Warranty - See link top of page

UK Shipping is same day for orders paid by 10am UK time. After 10am contact us, we can generally post until 1pm. Shipping days are Monday to Friday. We do not ship at weekends. Non UK shipping is subject to export paperwork delay and will be same day or next day after export red tape is completed.

Please be sure to provide a safe and trusted delivery address where someone is likely to be in to take postal deliveries. Items returned as not possible to deliver or not called for can be resent but postage will be charged again or, if refund made, will not include postage paid. Once an order has been signed for on a Royal Mail service it is impossible to claim non delivery so please make sure your address is correct and accessible.

UK Shipping

2nd class post signed for.

For 2nd the Royal Mail delivery TARGET is 2-3 days from date of dispatch.
Signed For Post CANNOT be tracked in transit and is NOT time guaranteed.
We are not responsible for any delay with Royal Mail services and and can take no action in such cases as there simply is no way to chase Royal Mail sign for mail when it is in their system.
A signature taken upon delivery or failed delivery recorded online so you know to go and collect it.
Signed for is insured against non delivery and items can be resent or refunded after 15 WORKING days.

Choose DPD Delivery if you need it 100% for sure within a week or and/or tracking is important.

DPD (Other 24 hour courier) Does NOT deliver on Saturdays

For UK mainland we use DPD couriers.
For Highlands, Northern Ireland and islands we use Royal Mail Special Delivery or UPS due to very high DPD cost.
Delivery for Northern Ireland and islands is not next day but 2-3 day.
All services are insured and tracked.
UK mainland Saturday delivery can be arranged for orders placed after midday Thursday but costs extra. Please contact us for details.

Non UK Export Shipping - Please read carefully and contact us if you have any questions

EU residents: No import duty is charged for inside EU sales. Outside EU - You may be liable to pay import duty. We have no control over this.

There are special UK export rules for sales of telescopic scopes of 10x or more maximum magnification

Type 1 - Fast Track Open Export License - no shipping delay

For customers in the EU (with exception of Croatia), Norway, Switzerland, Iceland, USA, Canada, Australia or New Zealand the export process is quick and easy. We send you a simple form to sign and date. You print it, sign and date and scan/photograph and email and post back and we can ship right away. Other areas we can still ship to but there will be a delay.

Type 2 - Export Permit - 3-4 week shipping delay

If you do not live in one of the countries listed above then - with the exception of EU and UN arms sanctions destinations - we can still ship to you if your country allows the import of rifle scopes. Please check if unsure.

However there will be a 3-4 week shipping delay while we obtain the necessary export permit.

Type 2 Process -

We email you an export paper after you buy. You print it. Sign it. Email to us.

We apply for permit, Permits take 3-4 weeks to be approved. Once approved we ship.We cannot ship before approval so if this is not acceptable please do not buy.

International Shipping

Royal Mail Signed For Airmail - This is insured airmail.
On arrival in your country it is passed to your national postal service for final delivery to you or your local collection point.
We use a fully tracked mail service if it is available and tracking is at least until entry to your country. At this point not all areas integrate with Royal Mail tracking so it may not be possible to location track once it arrives in your area.
If it is lost or does not arrive then can be resent or refunded after 1 month.

International Delivery time ESTIMATES:

3-10 days Europe and 7-10 days rest of world - "On average"
These are postal service company targets They are NOT delivery guarantees and can vary between countries - For example, we have found that delivery to Scandinavia is very fast, Australia very good in general even though it is a long way - some places in southern Europe...not so fast.
They are for main towns and cities. Rural, remote areas and islands will take longer.
If you need it fast or prefer a courier (Fedex, TNT etc) please request a price quote.

Please be sure to provide an address where someone is likely to be in to take postal deliveries. Items returned as not possible to deliver or not called for can be resent but postage will be charged again or, if refund made, will not include postage paid.

Please also check that you are allowed to import scopes. Some countries do not allow them. We have blocked those that we know of but we cannot know the rules everywhere! Scopes returned for such a reason will be refunded but minus our cost of shipping. Scopes confiscated by customs and not returned to us cannot be refunded.