---
product_id: 287760743
title: "Bore sighter Kit with Arbors"
brand: "cosmoing"
price: "NT$355"
currency: TWD
in_stock: true
reviews_count: 6
url: https://www.desertcart.tw/products/287760743-bore-sighter-kit-with-arbors
store_origin: TW
region: Taiwan
---

# Precision alignment for perfect zero Heavy-duty hard plastic carrying case 16 adjustable arbors for calibers .177 to .50 Bore sighter Kit with Arbors

**Brand:** cosmoing
**Price:** NT$355
**Availability:** ✅ In Stock

## Summary

> 🎯 Zero in like a pro—no bullets wasted, just pure precision.

## Quick Answers

- **What is this?** Bore sighter Kit with Arbors by cosmoing
- **How much does it cost?** NT$355 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/287760743-bore-sighter-kit-with-arbors)

## Best For

- cosmoing enthusiasts

## Why This Product

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

## Key Features

- • **Rugged Portability:** Compact, heavy-duty case keeps your kit protected and ready for any range session
- • **All-in-One Professional Kit:** Includes 30mm collimator, 20x20 grid, and 16 studs for versatile use
- • **Effortless Setup & Adjustment:** Quick hand-tighten arbor and intuitive grid alignment for fast zeroing
- • **Universal Caliber Compatibility:** 16 arbors cover everything from .177 to .50 caliber firearms
- • **Pinpoint Accuracy, Zero Wasted Shots:** Align your scope reticle flawlessly without firing a single bullet

## Overview

The COSMOING Scope Boresighter Kit offers a comprehensive, precision toolset for aligning scopes on handguns and rifles from .177 to .50 caliber. Featuring 16 adjustable arbors, a 30mm collimator with 20x20 grid, and a durable carrying case, it enables fast, bullet-free bore sighting indoors or outdoors, saving time and ammo while ensuring perfect scope zeroing.

## Description

Full description not available

## Features

- Indoor or outdoor without shooting a single bullet. Bore Sighter Kit with Adjustable Arbor.
- Arbors including for .177, .22, 6mm, .25, 6.5mm, .27, 7mm, .30, .32, .338, .35, .375, .44, .45, .50. All packaged in a heavy duty hard plastic case.
- Boresighter makes sighting in guns much easier by aligning the scope's reticle with the barrel. The boresighter will help you get on paper without wasting shots.
- All in One Kit: Works for handguns and rifles. 30mm Collimator,20*20 grids; 16 Studs and Carrying hard case included.
- Use Steps: 1）Select the appropriate bore arbor and insert the notched. 2）Hand tighten the screw to attach firmly the boresighter. 3）Insert the other end of the stud into the muzzle. 4）Rotate the boresighter until the grid lines match vertically. 5）Adjust the windage and elevation dials of scope so the reticle inside of both of these is equal.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | COSMOING |
| Product Dimensions | 11.5"L x 8.25"W x 2.5"H |
| Sport | Hunting |
| Material | Plastic |
| Magnification Minimum | 20 x |
| Compatible Devices | Handgun, Shotgun, Rifle |
| Mounting Type | Picatinny Mount |
| Night vision | No |
| Manufacturer | COSMOING |
| UPC | 048518774662 |
| Item Package Dimensions L x W x H | 11.69 x 9.13 x 2.72 inches |
| Package Weight | 1.31 Kilograms |
| Brand Name | COSMOING |
| Part Number | BS002-US |
| Size | Premium Boresighter Kit |

## Product Details

- **Brand:** COSMOING
- **Product Dimensions:** 11.5"L x 8.25"W x 2.5"H
- **Sport:** Hunting
- **Material:** Plastic
- **Magnification Minimum:** 20 x
- **Compatible Devices:** Handgun, Shotgun, Rifle
- **Mounting Type:** Picatinny Mount
- **Night vision:** No
- **Manufacturer:** COSMOING
- **UPC:** 048518774662

## Images

![Bore sighter Kit with Arbors - Image 1](https://m.media-amazon.com/images/I/71WozOwF2oL.jpg)
![Bore sighter Kit with Arbors - Image 2](https://m.media-amazon.com/images/I/71WZSZK3WVL.jpg)
![Bore sighter Kit with Arbors - Image 3](https://m.media-amazon.com/images/I/713MqC6WG3L.jpg)
![Bore sighter Kit with Arbors - Image 4](https://m.media-amazon.com/images/I/51WU6+pn4WL.jpg)
![Bore sighter Kit with Arbors - Image 5](https://m.media-amazon.com/images/I/61RoPSTT8oL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Most non-AR rifles.
*by K***Y on April 7, 2023*

Works great for most rifles. Needs an adapter for AR styles, not sure if I can buy or have to create.

### ⭐⭐⭐⭐ no operators manual
*by R***Y on April 8, 2023*

i woukd prefer a manual that tells what calibers are in the area of the arbors, i have a 308/7.63 i had to play with the arbors to find out which one to use. same thing with a 5.56, haven't got to the 270 yet. when i found the correct arbor i marked it with tape for future use for my sons.

### ⭐⭐⭐⭐⭐ Great tool.
*by D***H on November 7, 2022*

Very easey to use.Shipping was very fast.Am very pleased with my purchase.

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**Shop now:** [https://www.desertcart.tw/products/287760743-bore-sighter-kit-with-arbors](https://www.desertcart.tw/products/287760743-bore-sighter-kit-with-arbors)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-05-25*