---
product_id: 49137163
title: "Mountmaster 4-12x50 PX ADJ Riflescope With Mounts NMM41250AO Airgun Rifle Scope Telescopic Sight"
brand: "nikko stirling"
price: "$189.40"
currency: USD
in_stock: true
reviews_count: 8
category: "Nikko Stirling"
url: https://www.desertcart.us/products/49137163-mountmaster-4-12x50-px-adj-riflescope-with-mounts-nmm41250ao-airgun
store_origin: US
region: United States of America
---

# 4-12x magnification range 50mm objective lens for crisp clarity PX Adjustable AO for sharp focus Mountmaster 4-12x50 PX ADJ Riflescope With Mounts NMM41250AO Airgun Rifle Scope Telescopic Sight

**Brand:** nikko stirling
**Price:** $189.40
**Availability:** ✅ In Stock

## Summary

> 🎯 Lock in your target, elevate your game with Mountmaster precision!

## Quick Answers

- **What is this?** Mountmaster 4-12x50 PX ADJ Riflescope With Mounts NMM41250AO Airgun Rifle Scope Telescopic Sight by nikko stirling
- **How much does it cost?** $189.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/49137163-mountmaster-4-12x50-px-adj-riflescope-with-mounts-nmm41250ao-airgun)

## Best For

- nikko stirling enthusiasts

## Why This Product

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

## Key Features

- • **Crystal-Clear Optics:** 50mm objective lens delivers bright, sharp images even in low light conditions.
- • **Lightweight & Durable:** Crafted from lightweight alloy, weighing just 640g for effortless handling without compromising strength.
- • **Adaptive Focus Control:** PX Adjustment (AO) ensures razor-sharp targeting from 15 meters and beyond.
- • **Precision Zoom Mastery:** Seamlessly switch from 4x to 12x for pinpoint accuracy at varied distances.
- • **Secure Mounting System:** Double clamp two-piece mounts with stop pin fit modern 11mm dovetails for rock-solid stability.

## Overview

The Mountmaster 4-12x50 PX ADJ Riflescope by Nikko Stirling combines versatile magnification, a large 50mm objective lens, and PX adjustable focus to deliver sharp, bright images for airgun and rimfire shooters. Designed with durable lightweight alloy and secure double clamp mounts for 11mm dovetails, it offers reliable performance for modern rifles, making it a trusted choice for precision shooting enthusiasts.

## Description

Caution: Due to the length of this model it won't suit most brake barrel air rifles, on underlever models the scope may cover the loading port. Nikko riflescopes offer top quality optics and superb value

Review: Great quality - Real good quality scope and very prompt delivery from js ramsbottoms
Review: Great value - Yes there are more expensive and arguably better scopes out there, but I have used this brand on air rifles and 22rf for years and have always been delighted

## Features

- Top quality Nikko scope with PX Adjustment (AO), fast focus eyebell and double clamp two piece mounts (with stop pin) to suit 11mm dovetails (most MODERN air rifles and rimfire rifles)
- Caution: Due to the length of this model it won't suit most brake barrel air rifles, on underlever models the scope may cover the loading port
- Mounts: Supplied with mounts to fit 11mm dovetails (most MODERN airguns and .22 rimfires
- Tube Size: 1" - Weight: 640grams - Reticle: Half Mil Dot Reticle
- Minimum Focus (On Full Magnification): approx. 15 metres

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071VH369W |
| Brand Name | Nikko Stirling |
| Colour | Black, Red |
| Compatible Devices | Rifle |
| Customer Reviews | 4.5 4.5 out of 5 stars (45) |
| Item Weight | 782 Grams |
| Magnification Maximum | 12 x |
| Magnification Minimum | 4 x |
| Manufacturer | Nikko Stirling |
| Material Type | Lightweight Metal or Alloy |
| Mounting Type | Dovetail Mount |
| Night vision | No |
| Objective Lens Diameter | 50 Millimetres |
| Product Style | Modern |
| Reticle Type | Half Mil Dot |
| Sport Type | Airsoft |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** Nikko Stirling
- **Colour:** Black, Red
- **Compatible devices:** Rifle
- **Item weight:** 782 Grams
- **Magnification maximum:** 12 x
- **Magnification minimum:** 4 x
- **Material:** Lightweight Metal or Alloy
- **Objective lens diameter:** 50 Millimetres
- **Sport:** Airsoft
- **Style:** Modern

## Images

![Mountmaster 4-12x50 PX ADJ Riflescope With Mounts NMM41250AO Airgun Rifle Scope Telescopic Sight - Image 1](https://m.media-amazon.com/images/I/71JZXkfPggL.jpg)

## Questions & Answers

**Q: O have a night cam add on . What the size of the eye peace.in mills .**
A: About 30mm.

**Q: Would this be too long and obscure the loading port of a Weihrauch hw77k**
A: Hi, it will cover the loading port so probably not ideal.

**Q: Joe lee what better scope than this nikkon at £70**
A: No

**Q: How long is the scope**
A: Length 34.5 cms including the caps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality
*by A***R on 2 April 2026*

Real good quality scope and very prompt delivery from js ramsbottoms

### ⭐⭐⭐⭐⭐ Great value
*by K***D on 20 July 2023*

Yes there are more expensive and arguably better scopes out there, but I have used this brand on air rifles and 22rf for years and have always been delighted

### ⭐⭐⭐⭐⭐ It works.
*by B***G on 2 May 2022*

Like all Nikko products, good price, does the job, it's not a Zeiss, but neither is it over £1000!

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-15*