---
product_id: 42586611
title: "P330-B Marksman 3X Prism Scope"
brand: "monstrum"
price: "S$190"
currency: SGD
in_stock: true
reviews_count: 13
category: "Monstrum"
url: https://www.desertcart.sg/products/42586611-p330-b-marksman-3x-prism-scope
store_origin: SG
region: Singapore
---

# 30mm objective lens for crisp clarity 3x magnification for precision Single-piece machined aluminum for rugged durability P330-B Marksman 3X Prism Scope

**Brand:** monstrum
**Price:** S$190
**Availability:** ✅ In Stock

## Summary

> 🎯 Lock in your shot, stand out in the field.

## Quick Answers

- **What is this?** P330-B Marksman 3X Prism Scope by monstrum
- **How much does it cost?** S$190 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/42586611-p330-b-marksman-3x-prism-scope)

## Best For

- monstrum enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Sturdy single-piece aluminum body weighs just 17 oz but stands up to the toughest conditions.
- • **Lifetime Confidence:** Backed by Monstrum’s full lifetime warranty—gear up without second-guessing.
- • **Compact Powerhouse Optics:** Glass prism system delivers superior clarity in a sleek, lightweight design.
- • **Always-On Reticle Visibility:** Circle Dot reticle stays visible with or without illumination—no compromises in any light.
- • **Precision at 3x Magnification:** Zoom in with crystal-clear optics for targets up to 300 yards.

## Overview

The Monstrum P330-B Marksman 3X Prism Scope combines a cutting-edge glass prism optical system with 3x magnification and a 30mm objective lens, delivering sharp, fast target acquisition up to 300 yards. Its rugged single-piece machined aluminum construction weighs only 17 ounces, offering durability without bulk. Featuring a circle dot reticle visible with or without illumination, this scope ensures a clean sight picture in any lighting. Trusted by professionals and backed by a lifetime warranty, it’s a premium choice for serious marksmen seeking precision and reliability.

## Description

desertcart.com : Monstrum P330-B Marksman 3X Prism Scope | Circle Dot Reticle : Sports & Outdoors

Review: Top quality at a fair price! - I love it! Its built well, solid, no flaws. It was heavier than I imagined, but its very sturdy and that's what I was looking for. The scope is crystal clear with a decent eye relief. The reticle is clear and the lights work perfectly, amd are plenty bright/dim enough for any occasion. On a Milspec AR the scope "co-witnesses" the A2 front post (which doesn't work like a red dot because of the magnification) so I purchased the 7 slot monstrum quick Detatch adjustable riser for about 18$ and that is perfect for this scope and puts it at a comfortable eye level on its lowest setting but still keeps the sight clear of the front post. I haven't had the chance to go to the range but I'm sure it will have no problems as the construction is solid and its not a "cheep/crappy" sight, this thing feels like quality, on par with the major (expensive) brands. My only complain is that you can't get a cover for the lenses, but you don't really need them. it also comes with batteries installed plus replacements, along with a lense cleaning cloth. Hope this info helps some potential buyers, I recommend this sight without a doubt! Top quality at a fair price, no corners cut.
Review: 10/10 - Very nice scope. I had to do some serious work on getting it sighted in.... it was VERY HIGH AND VERY LEFT But after that no complaints. The bottom bolts did however back out and get loose after 60 or so shots so I would recommend some lock tight or 2 step epoxy on them. Great visibility, no glare no fog very crisp. Only red No green but a very nice unit

## Features

- Next generation prism sight with 3x magnification and 30mm objective lens, for lightning fast target acquisition out to 300 yards
- Features a glass prism optical system rather a refracting lens system like traditional scopes, allowing for better optical quality in a much smaller package.
- Unlike red dots, the reticle is visible with or without illumination, for a clean sight picture regardless of lighting or environment.
- Brand new single piece machined aluminum design, sturdier and more rigid than ever. 17 ounces in weight.
- All Monstrum products are backed by a full lifetime warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0718STFMR |
| Best Sellers Rank | #40,030 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #95 in Rifle Scopes |
| Brand | Monstrum |
| Brand Name | Monstrum |
| Color | Black |
| Compatible Devices | Rifle |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,732) |
| Date First Available | May 24, 2017 |
| Item Package Dimensions L x W x H | 6.14 x 3.39 x 3.03 inches |
| Item Weight | 17 Ounces |
| Magnification Maximum | 3 x |
| Magnification Minimum | 3 x |
| Manufacturer | Monstrum |
| Material | Aluminum |
| Model Name | P330-B |
| Mounting Type | Weaver Mount |
| Night vision | No |
| Objective Lens Diameter | 30 Millimeters |
| Package Weight | 0.62 Kilograms |
| Part Number | P330-B |
| Product Dimensions | 4.9"L x 1.57"W x 4.9"H |
| Reticle Type | Circle Dot |
| Sport | Hunting |
| Style | Circle Dot Reticle |
| UPC | 700118165485 |

## Product Details

- **Brand:** Monstrum
- **Color:** Black
- **Item Weight:** 17 Ounces
- **Magnification Maximum:** 3 x
- **Magnification Minimum:** 3 x
- **Material:** Aluminum
- **Objective Lens Diameter:** 30 Millimeters
- **Product Dimensions:** 4.9"L x 1.57"W x 4.9"H
- **Sport:** Hunting
- **Style:** Circle Dot Reticle

## Images

![P330-B Marksman 3X Prism Scope - Image 1](https://m.media-amazon.com/images/I/51N3e0k8s+L.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Will it work for less than 20 yards?**
A: It's three power so...at 20 yards I'd suggest open eye.

**Q: Is this clear with a stigmatism**
A: Yes! Big difference. Without long explanation this works basically like a standard scope as opposed to the reflecting light of a red dot. This also means you get an etched reticle that works fine without illumination.. still gives perfect black reticle with dead batteries. I have their older model and it solved my astigmatism problem with red dots.

**Q: What kind of batteries dose it take?**
A: Well uh, as it states on Amazon in the description....cr2032.

**Q: What would be the best fit riser to get for this optic?**
A: It would depend on the person and weapon it's being put on. I got a low Mount riser the my AR but that was for the way I shoot. Will have to chance it and hope the one you get works for you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Top quality at a fair price!
*by M***H on July 11, 2018*

I love it! Its built well, solid, no flaws. It was heavier than I imagined, but its very sturdy and that's what I was looking for. The scope is crystal clear with a decent eye relief. The reticle is clear and the lights work perfectly, amd are plenty bright/dim enough for any occasion. On a Milspec AR the scope "co-witnesses" the A2 front post (which doesn't work like a red dot because of the magnification) so I purchased the 7 slot monstrum quick Detatch adjustable riser for about 18$ and that is perfect for this scope and puts it at a comfortable eye level on its lowest setting but still keeps the sight clear of the front post. I haven't had the chance to go to the range but I'm sure it will have no problems as the construction is solid and its not a "cheep/crappy" sight, this thing feels like quality, on par with the major (expensive) brands. My only complain is that you can't get a cover for the lenses, but you don't really need them. it also comes with batteries installed plus replacements, along with a lense cleaning cloth. Hope this info helps some potential buyers, I recommend this sight without a doubt! Top quality at a fair price, no corners cut.

### ⭐⭐⭐⭐⭐ 10/10
*by L***D on January 8, 2026*

Very nice scope. I had to do some serious work on getting it sighted in.... it was VERY HIGH AND VERY LEFT But after that no complaints. The bottom bolts did however back out and get loose after 60 or so shots so I would recommend some lock tight or 2 step epoxy on them. Great visibility, no glare no fog very crisp. Only red No green but a very nice unit

### ⭐⭐⭐⭐ Nice scope for the price
*by S***N on January 18, 2024*

Ordered this as a slightly magnified alternative to my red dot. Image is clear, reticle lighting is nice, it has held zero with no issues so far (a couple of trips to the range), and seems pretty well made. Depending on your application…I would also recommend ordering a riser for it. I did and it sits nicely on my rifle. The eye relief is pretty good as long as your application doesn’t kick super hard. So far so good! I’d definitely recommend this for smaller rifle applications.

## Frequently Bought Together

- Monstrum P330-B Marksman 3X Prism Scope
- Monstrum Tactical Low Profile Picatinny Riser Mount with Quick Release, for Red Dots, Scopes, and Optics (0.5 inch H x 2.5 inch L)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-17*