---
product_id: 491124332
title: "Scope Boresighter Kit from .177 to .50 Caliber Precision Firearm Bore Sighting Optical Bore Sighter Kit with Arbors"
brand: "cosmoing"
price: "£42.32"
currency: GBP
in_stock: true
url: https://www.desertcart.co.uk/products/491124332-scope-boresighter-kit-from-177-to-50-caliber-precision-firearm
store_origin: GB
region: United Kingdom
---

# Compact kit with leather holster Precision alignment for perfect shot Adjustable arbors fit .177 to .50 cal Scope Boresighter Kit from .177 to .50 Caliber Precision Firearm Bore Sighting Optical Bore Sighter Kit with Arbors

**Brand:** cosmoing
**Price:** £42.32
**Availability:** ✅ In Stock

## Summary

> 🎯 Zero in like a pro—before you even pull the trigger!

## Quick Answers

- **What is this?** Scope Boresighter Kit from .177 to .50 Caliber Precision Firearm Bore Sighting Optical Bore Sighter Kit with Arbors by cosmoing
- **How much does it cost?** £42.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/491124332-scope-boresighter-kit-from-177-to-50-caliber-precision-firearm)

## 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

- • **Indoor & Outdoor Ready:** Sight in your firearm anywhere, anytime—no range required.
- • **All-in-One Professional Kit:** Complete with 30mm collimator, 20x20 grid, 16 studs, and a rugged carrying case.
- • **Effortless Setup & Adjustment:** Quick hand-tighten arbor and intuitive grid alignment for fast zeroing.
- • **Universal Caliber Compatibility:** Includes arbors for everything from .177 to .50 caliber—one kit fits all your firearms.
- • **Pinpoint Accuracy Without Firing:** Align your scope’s reticle perfectly without wasting a single bullet.

## Overview

The COSMOING Scope Boresighter Kit is a precision optical tool designed to align your firearm’s scope reticle with the barrel effortlessly. Compatible with calibers from .177 to .50, it includes adjustable arbors, a 30mm collimator with grid lines, and a durable leather holster for portability. Ideal for both handguns and rifles, this kit enables indoor and outdoor bore sighting without firing a single bullet, saving time and ammunition while ensuring rapid, accurate 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 leather holster.
- 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 |
| Color | Black |
| Style | Traditional |
| Sport | Hunting |
| Material | Metal |
| Magnification Minimum | 20 x |
| Compatible Devices | Handgun, Rifle |
| Mounting Type | Picatinny Mount |
| Night vision | No |
| Manufacturer | COSMOING |
| UPC | 751717204990 |
| Item Package Dimensions L x W x H | 5.87 x 5.79 x 2.13 inches |
| Package Weight | 0.74 Kilograms |
| Brand Name | COSMOING |
| Part Number | BS005.us |
| Size | Basic Boresighter Kit |

## Product Details

- **Brand:** COSMOING
- **Color:** Black
- **Style:** Traditional
- **Sport:** Hunting
- **Material:** Metal
- **Magnification Minimum:** 20 x
- **Compatible Devices:** Handgun, Rifle
- **Mounting Type:** Picatinny Mount
- **Night vision:** No
- **Manufacturer:** COSMOING

## Images

![Scope Boresighter Kit from .177 to .50 Caliber Precision Firearm Bore Sighting Optical Bore Sighter Kit with Arbors - Image 1](https://m.media-amazon.com/images/I/81m0u5xew7L.jpg)

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**Shop now:** [https://www.desertcart.co.uk/products/491124332-scope-boresighter-kit-from-177-to-50-caliber-precision-firearm](https://www.desertcart.co.uk/products/491124332-scope-boresighter-kit-from-177-to-50-caliber-precision-firearm)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-22*