---
product_id: 6077112
title: "Brownell Formula 44/40 Instant Gun Blue"
brand: "brownells"
price: "€ 28.47"
currency: EUR
in_stock: true
category: "Brownells"
url: https://www.desertcart.pt/products/6077112-brownell-formula-44-40-instant-gun-blue
store_origin: PT
region: Portugal
---

# Instant action formula Deep, lasting blue finish Precision steel treatment Brownell Formula 44/40 Instant Gun Blue

**Brand:** brownells
**Price:** € 28.47
**Availability:** ✅ In Stock

## Summary

> 🔵 Elevate your firearm care with instant, flawless blue perfection!

## Quick Answers

- **What is this?** Brownell Formula 44/40 Instant Gun Blue by brownells
- **How much does it cost?** € 28.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/6077112-brownell-formula-44-40-instant-gun-blue)

## Best For

- brownells enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Gunsmiths:** Ranked #187 in gunsmithing tools, a go-to for precision firearm care.
- • **Compact & Lightweight:** Portable 2.5" x 1" x 2.5" bottle weighing just 0.06 kg—perfect for on-the-go maintenance.
- • **High Customer Satisfaction:** Rated 4.6/5 by over 1,100 users who demand quality and reliability.
- • **Instant Blue Transformation:** Achieve a professional-grade, deep blue finish on steel surfaces in moments.
- • **Manufacturer-Backed Quality:** Formula 44/40’s trusted formula with warranty support ensures peace of mind.

## Overview

Brownell Formula 44/40 Instant Gun Blue is a compact, high-performance liquid solution designed for rapid and durable bluing of steel firearm parts. Trusted by professionals and ranked among top gunsmithing tools, it delivers a deep, corrosion-resistant finish that enhances both aesthetics and longevity.

## Description

desertcart.com : Brownell Formula 44/40 Instant Gun Blue : Sports & Outdoors

## Features

- non-returnable (hazardous)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00IYZBWC8 |
| Air Gun Power Type | Spring-Piston |
| Barrel Material Type | Aluminum |
| Best Sellers Rank | #53,575 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #187 in Gunsmithing Tools |
| Brand Name | Brownells |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,139) |
| Frame Material Type | Plastic |
| Included Components | Formula 44/40 Instant Liquid Gun Blue for Steel |
| Item Dimensions L x W x H | 2.5"L x 1"W x 2.5"H |
| Item Type Name | Gun Cleaning Kit |
| Item Weight | 0.06 kg |
| Manufacturer | Formula 44/40 |
| Model Name | 082440002 |
| Team Name | Formula 44 |
| UPC | 762022610499 |
| Warranty Description | Manufacturer Warranty |

## Product Details

- **Air Gun Power Type:** Spring-Piston
- **Barrel Material Type:** Aluminum
- **Brand:** Brownells
- **Color:** Blue
- **Frame Material:** Plastic
- **Item Weight:** 0.06 kg
- **Manufacturer:** Formula 44/40
- **Product Dimensions:** 2.5"L x 1"W x 2.5"H
- **Team Name:** Formula 44
- **UPC:** 762022610499

## Images

![Brownell Formula 44/40 Instant Gun Blue - Image 1](https://m.media-amazon.com/images/I/61yWo7zGRaL.jpg)

## Questions & Answers

**Q: why is the price of 4440 gun blue 2 times the price of buds gun shope.**
A: Because they will charge you $12 for shipping it.

**Q: I have a black powder 44 colt that I built from a kit and I want to blue all the metal. will this work on my gun?**
A: This product is the best of several "cold blue" products I have used, but mainly for touch up of small areas.  It will work best on large pieces if you heat them first with a hair dryer or heat gun.  Be sure all traces of oil, even your fingerprints, are removed from the metal before you apply 44/40.  Try a second application on small parts first before doing a second coat on the frame and barrel.  Since the cold blue is effect an oxidation, be sure to oil everything well when you are satisfied with the coverage.

**Q: Is this a liquid or a gel?**
A: 44/40 is a liquid.  It turns ferrous metals almost black instantly.  Takes only a little, so I apply it with a bit of paper towel, sometimes Q-tips.  Very satisfying.

**Q: Is there enough to do a shotgun barrel?**
A: It depends on how well you prep the barrel.  I used it on a front sight base where I ground off the sling swivel in conjunction with installing a free float tube.  The color wasn't very deep so I did a few coatings.  Could be my technique or the cast material of the base.  A steel barrel might have a better result.   Rock River Arms called this product out in its free float tube instructions.

## Frequently Bought Together

- Brownell Formula 44/40 Instant Gun Blue
- Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL)
- Homax 10120000 Steel Wool, 12 pad, Grade #0000, Rhodes American, Final Finish

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**Shop now:** [https://www.desertcart.pt/products/6077112-brownell-formula-44-40-instant-gun-blue](https://www.desertcart.pt/products/6077112-brownell-formula-44-40-instant-gun-blue)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-08-30*