---
product_id: 64477788
title: "4x40 Mil Dot Nikko Stirling MountMaster AO with Mounts"
brand: "brand: nikko sterling"
price: "FREE"
currency: ARS
in_stock: false
reviews_count: 1
url: https://www.desertcart.com.ar/products/64477788-4x40-mil-dot-nikko-stirling-mountmaster-ao-with-mounts
store_origin: AR
region: Argentina
---

# 4x40 Mil Dot Nikko Stirling MountMaster AO with Mounts

**Brand:** brand: nikko sterling
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** 4x40 Mil Dot Nikko Stirling MountMaster AO with Mounts by brand: nikko sterling
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/64477788-4x40-mil-dot-nikko-stirling-mountmaster-ao-with-mounts)

## Best For

- brand: nikko sterling enthusiasts

## Why This Product

- Trusted brand: nikko sterling brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Product description








Nikko Stirling MountMaster SeriesIdeal for airguns and .22 riflesThese well made competitively priced scopes will stand up to real use. MOUNTMASTER riflescopes come with full metal alloy adjustment houses for greater reliability. Adjustments are to 1/4 of an inch and feature a 4 plex reticle as standard. All MOUNTMASTER scopes are shock tested and nitrogen filled at the factory for fog and waterproofing. Additionally all MOUNTMASTER scopes come supplied with 3/8&#x201D;quick detachable mounts - ideal for mounting on air guns and 22 rifles.Mountmaster AO seriesHunting small game with airguns or .22 rifles is becoming increasingly popular and a challenging sport. So too are the various plinking targets available today. Usually the game or target is small and the distances can vary from shot to shot. Normally a riflescope is focuses and parallax free at 100 yards. However when the game or target is at closer ranges then focusing and parallax correction is necessary to avoid inaccuracy.The new Mountmater AO series has been developed to provide a fast correction to focus and parallax through the adjustable objective (AO) lenses. Now you can adjust right down to targets that are only 10 yards if required!The AO series feature a very strong 3/8-inch dovetail mount ring. Additionally we have added a recoil stop screw that allows the mount to be secured to powerful airguns without fear of shifting under the sharp recoil of the spring release.The mountmaster AO series features finger adjustable windage and elevation bezels and an attractive matte finish. The reticle supplied is the popular Mil Dot which allows convenient holdover markers allowing quick shooting over varying distances!












Legal Disclaimer








We accept no liability for mis-use of this product. You must be 18 Years or older to purchase.

## Images

![4x40 Mil Dot Nikko Stirling MountMaster AO with Mounts - Image 1](https://images-na.ssl-images-amazon.com/images/I/11te7ulD0aL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Solidly made and good value
  

*by J***Y on Reviewed in the United Kingdom on 9 June 2015*

I have a 4 x 32 Mountmaster AO that only differs by the size of the objective lens and, the minimum parallax correction is 15 feet whereas the 4 x 40 is 30 feet.  It is a well made sight without signs of chromatic aberration (coloured fringing around the target).  Setting the focus gives a distinct mil dot reticle.  I chose the Nikko Stirling in place of the Hawke as the mounts supplied with the Nikko Stirling are double screws.  Mine is mounted on a Crosman 2250B with a GMAC long rails steel breech, so I have repositioned the mounts to the maximum distance apart.  The scope comes complete with clear lens caps - one is yellow - and a lens cleaning cloth.  Relief - the distance between the eye and the lens - is 85mm but it doesn't seem to be critical.  The x4 magnification is fine for shooting at 10 metres.This sight is available in the UK at less than the price on Amazon.

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**Shop now:** [https://www.desertcart.com.ar/products/64477788-4x40-mil-dot-nikko-stirling-mountmaster-ao-with-mounts](https://www.desertcart.com.ar/products/64477788-4x40-mil-dot-nikko-stirling-mountmaster-ao-with-mounts)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-13*