---
product_id: 51719191
title: "12GA Red Dot Laser Bore Sight in-Chamber Cartridge Laser Bore Sighter with Two Sets Batteries"
brand: "mosandon"
price: "¥4561"
currency: JPY
in_stock: true
reviews_count: 8
category: "Mosandon"
url: https://www.desertcart.jp/products/51719191-12ga-red-dot-laser-bore-sight-in-chamber-cartridge-laser
store_origin: JP
region: Japan
---

# Class IIIA <5mW safe laser 100 yd visible laser range 2 sets batteries included 12GA Red Dot Laser Bore Sight in-Chamber Cartridge Laser Bore Sighter with Two Sets Batteries

**Brand:** mosandon
**Price:** ¥4561
**Availability:** ✅ In Stock

## Summary

> 🎯 Lock your sights, lead the pack.

## Quick Answers

- **What is this?** 12GA Red Dot Laser Bore Sight in-Chamber Cartridge Laser Bore Sighter with Two Sets Batteries by mosandon
- **How much does it cost?** ¥4561 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/51719191-12ga-red-dot-laser-bore-sight-in-chamber-cartridge-laser)

## Best For

- mosandon enthusiasts

## Why This Product

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

## Key Features

- • **Double Battery Power:** Comes with two complete sets of batteries for extended uninterrupted use.
- • **Effortless Chamber Fit:** Simply insert the cartridge-style boresighter into your 12GA chamber—no tools needed.
- • **Ammo-Free Sight Adjustment:** Save costly ammo by perfecting your aim without firing a single shot.
- • **Safe & Reliable Laser Tech:** Class IIIA laser under 5mW ensures safe handling without compromising performance.
- • **Pinpoint Accuracy in Seconds:** Instantly zero your shotgun scope with a precise 100-yard visible red laser.

## Overview

The MOSANDON 12GA Red Dot Laser Bore Sight is a compact, copper in-chamber cartridge designed for fast, safe, and ammo-free shotgun scope zeroing. Featuring a visible red laser beam reaching up to 100 yards and powered by two sets of batteries, it offers extended use and precision aiming for hunters and shooting enthusiasts alike.

## Description

desertcart.com : 12GA Red Dot Laser Bore Sight in-Chamber Cartridge Laser Bore Sighter with Two Sets Batteries : Sports & Outdoors

Review: Fits in my Mossberg 590s, is a strong laser. - Worked great to sight in my Crimson Trace laser saddle on my Mossberg 590s Shockwave. Has a strong laser, doubles as a cat toy.
Review: 12 ga red dot laser bore cartridge. - Great item, fast shipping

## Features

- SAFE: Class IIIA laser,Output power less than 5mW.
- LONG RANG: The visible range of laser is as far as 100 yds, the straight red laser beam is easier to identify. and to help you adjust the scope and sight quickly and accurately.
- LONG LIFE: Equipped with 2 sets of batteries(6pcs),double the service time.
- EASY TO USE: Fastest gun zeroing and sighting device, you just place the boresighter in the chamber simply.
- SAVING: Adjustments to sight in your scopes & sights without firing any ammo. You don’t need to use the extra ammo for honing shooting skills.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076J452WK |
| Aiming Scope Sight Pin Size | 2 Inches |
| Best Sellers Rank | #17,492 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #35 in Hunting Boresighters #1,771 in Hunting Equipment |
| Brand | MOSANDON |
| Brand Name | MOSANDON |
| Color | Red Laser |
| Compatible Devices | Shotgun |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,460) |
| Date First Available | October 17, 2017 |
| Included Components | 2 sets of batteries |
| Item Dimensions LxWxH | 2.4 x 0.87 x 0.87 inches |
| Item Package Dimensions L x W x H | 3.03 x 2.05 x 0.63 inches |
| Item Weight | 0.07 Pounds |
| Magnification Maximum | 6 x |
| Magnification Minimum | 1 x, 6 x |
| Manufacturer | MOSANDON |
| Material | Copper |
| Model Name | 12GA Boresighter |
| Mounting Type | Dovetail Mount |
| Night vision | No |
| Number of Items | 1 |
| Package Weight | 0.03 Kilograms |
| Part Number | MSD-12GA |
| Product Dimensions | 2.4"L x 0.87"W x 0.87"H |
| Reticle Type | Red Dot |
| Size | 12GA |
| Sport | Hunting and Shooting |
| Style | 12 Gauge Boresighter |
| Suggested Users | unisex-adult |
| UPC | 190149159780 |

## Product Details

- **Brand:** MOSANDON
- **Color:** Red Laser
- **Compatible Devices:** Shotgun
- **Item Weight:** 0.07 Pounds
- **Magnification Maximum:** 6 x
- **Magnification Minimum:** 1 x, 6 x
- **Material:** Copper
- **Product Dimensions:** 2.4"L x 0.87"W x 0.87"H
- **Sport:** Hunting and Shooting
- **Style:** 12 Gauge Boresighter

## Images

![12GA Red Dot Laser Bore Sight in-Chamber Cartridge Laser Bore Sighter with Two Sets Batteries - Image 1](https://m.media-amazon.com/images/I/51asNRGDIGL.jpg)

## Questions & Answers

**Q: Will this work in a semi auto shotgun**
A: It’s a bore sighter it will work with its caliber weather pump or semi. It’s like a single shot vs semi still same caliber regardless....

**Q: Iis there a 20 guage copy of this 12 guage red dot model.? 
 help............. thnxx, g**
A: Its a standard 12 gauge red dot laser bore sight.

**Q: The directions mention On and Off positions.  Where is the switch?**
A: This laser sight is a compact calibration device placed in the gun chamber. There is no special power switch. It starts to work after installing the battery and tightening the back cover. Please take out the battery when it is not in use. About this, our product manual has detailed instructions.

**Q: does it come with batteries**
A: If I recall correctly, it does include batteries.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fits in my Mossberg 590s, is a strong laser.
*by M***D on December 22, 2025*

Worked great to sight in my Crimson Trace laser saddle on my Mossberg 590s Shockwave. Has a strong laser, doubles as a cat toy.

### ⭐⭐⭐⭐⭐ 12 ga red dot laser bore cartridge.
*by H***R on January 1, 2026*

Great item, fast shipping

### ⭐⭐⭐⭐⭐ Must have item for optics on a shotgun
*by J***S on October 2, 2025*

If you have a shotgun with optics, sights or a scope, this is a must have item. Can't tell you how many shells it has saved me, plus, you can always use it to check your optics later and make sure nothing has shifted.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-22*