---
product_id: 292778903
title: "OP3 Micro SL, Red 4.0 MOA Single Dot, Side Loading, Black"
brand: "utg"
price: "₩216305"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/292778903-op3-micro-sl-red-4-0-moa-single-dot-side
store_origin: KR
region: South Korea
---

# 4.0 MOA single red dot IPX7 waterproof rating 15,000+ hrs battery life OP3 Micro SL, Red 4.0 MOA Single Dot, Side Loading, Black

**Brand:** utg
**Price:** ₩216305
**Availability:** ✅ In Stock

## Summary

> 🎯 Lock on, level up, and never miss your mark.

## Quick Answers

- **What is this?** OP3 Micro SL, Red 4.0 MOA Single Dot, Side Loading, Black by utg
- **How much does it cost?** ₩216305 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/292778903-op3-micro-sl-red-4-0-moa-single-dot-side)

## Best For

- utg enthusiasts

## Why This Product

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

## Key Features

- • **Precision Targeting:** 4.0 MOA red dot with 8 brightness settings adapts instantly to any lighting condition for pinpoint accuracy.
- • **Unmatched Endurance:** Over 15,000 hours of continuous use on a single battery—stay mission-ready without interruptions.
- • **Effortless Maintenance:** Side-loading battery compartment means no need to remove or re-zero your sight—speed and convenience combined.
- • **Seamless Compatibility:** Mounts easily on Picatinny rails with Docter footprint and co-witnesses suppressor-height iron sights for versatile setups.
- • **All-Weather Reliability:** IPX7 waterproof rating ensures flawless performance rain or shine, no compromises.

## Overview

The UTG OP3 Micro SL is a compact, precision-machined red dot sight crafted from durable 6061-T6 aluminum with a matte black anodized finish. Featuring a 4.0 MOA single red dot reticle with 8 brightness levels, it offers a wide 23mm field of view and an IPX7 waterproof rating for all-weather reliability. Its side-loading battery compartment delivers over 15,000 hours of battery life without removing the sight or losing zero. Compatible with Picatinny mounts and co-witnessing suppressor-height iron sights, this optic is designed for professional-grade performance and ease of use.

## Description

UTG OP3 Micro SL, Red 4.0 MOA Single Dot, Side Loading, Black

## Features

- Precision Machined from 6061-T6 Aluminum Construction Finished in a Matte Black Anodization, IPX7 Waterproof Rated
- Red 4.0 MOA Single Dot with 8 Brightness Intensity Settings to Accommodate Different Weather/Light Conditions, Wide Field of View 23mm Lens
- 15,000+ Hours Battery Life at Middle Brightness Setting, Side Loading Battery Compartment, No Longer Necessary to Remove Sight and Re-zero
- Mounting Base Interface Uses the Common Docter Footprint, Removable Low Profile Picatinny Mounting Base Included
- Co-witnesses with Most Suppressor Height Iron Sights, Rear face of Optic Hood Laser Engraved with Tertiary Aiming Point
- NOTE: We recommend to tighten the #6-48 screw with torque value of about 12 inch-lb and the side plate screw with torque value of about 35 inch-lb.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | UTG |
| Color | Black |
| Style | Compact |
| Product Dimensions | 1.81"L x 1.34"W x 1.81"H |
| Sport | Airsoft |
| Item Weight | 1.81 Ounces |
| Material | Aluminum |
| Objective Lens Diameter | 23 Millimeters |
| Magnification Minimum | 1 x |
| Compatible Devices | Handgun |
| Mounting Type | Picatinny Mount (Removable) |
| Night vision | No |
| Field Of View | 23 Millimeters |
| Model Name | OP-RDM20CT |
| Manufacturer | Leapers, Inc. |
| Reticle Type | Single dot |
| Item Package Dimensions L x W x H | 4.57 x 2.68 x 1.65 inches |
| Package Weight | 0.12 Kilograms |
| Item Dimensions  LxWxH | 1.6 x 0.95 x 0.87 inches |
| Brand Name | UTG |
| Warranty Description | Lifetime Warranty |
| Suggested Users | unisex-adult |
| Part Number | OP-RDM20CT |
| Model Year | 2021 |
| Included Components | CR 1632 3V High Energy Lithium Battery, Allen Wrench 3mm,T10 Torx Wrench, Cleaning Cloth, Dot Sight Owners Manual, Protective Optic Cove, #6-48 T10 Torx Screw, 7mm X2, M3x0.5 T10 Torx Screw, 7mm X2 |
| Size | One Size |

## Product Details

- **Brand:** UTG
- **Color:** Black
- **Style:** Compact
- **Product Dimensions:** 1.81"L x 1.34"W x 1.81"H
- **Sport:** Airsoft
- **Item Weight:** 1.81 Ounces
- **Material:** Aluminum
- **Objective Lens Diameter:** 23 Millimeters
- **Magnification Minimum:** 1 x
- **Compatible Devices:** Handgun

## Images

![OP3 Micro SL, Red 4.0 MOA Single Dot, Side Loading, Black - Image 1](https://m.media-amazon.com/images/I/71L+b+P2wtL.jpg)

## Questions & Answers

**Q: Does this fit a canik tp9sfx?**
A: Yes, with #1 plate

**Q: Does this have the shake awake feature?**
A: It does not have shake wake. But  overall its a decent sight used and abused on my Gen 3 glock 17

**Q: Does it fit a taurus gx4 toro?**
A: It does not fit the GX4 toro as the GX4 has an rmsc footprint while this fits a Docter/Noblex/Vortex Viper footprint

**Q: Does it fit with the glock 21 gen 4? Thanks!**
A: The Glocks are cut for RMR dots so you’ll need an adapter plate. It has the same footprint as a Burris Fastfire.

## Frequently Bought Together

- UTG OP3 Micro SL, Red 4.0 MOA Single Dot, Side Loading, Black
- UTG Super Slim RDM20 Dovetail Mount, Low Profile, Black

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**Shop now:** [https://www.desertcart.kr/products/292778903-op3-micro-sl-red-4-0-moa-single-dot-side](https://www.desertcart.kr/products/292778903-op3-micro-sl-red-4-0-moa-single-dot-side)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-28*