why is the price of 4440 gun blue 2 times the price of buds gun shope.

Because they will charge you $12 for shipping it.

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?

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.

Is this a liquid or a gel?

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.

Is there enough to do a shotgun barrel?

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.

Brownell Formula 44 40 Instant Gun Blue

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Description

🔵 Elevate your gun care game with instant, flawless blue—don’t get left behind!

COMPACT LIGHTWEIGHT - 2.5 x 1 x 2.5 inches, 0.06 kg—easy to store and carry in your toolkit or range bag.
HIGHLY RATED RELIABLE - 4.6/5 stars from over 1,100 users—join the community that swears by Formula 44/40.
PERFECT FOR BRASS AGING - Effortlessly age brass components to vintage perfection, adding authentic character.
TRUSTED BY GUNSMITHS WORLDWIDE - Ranked #147 in Gunsmithing Tools, a proven choice for experts and enthusiasts alike.
INSTANT PROFESSIONAL BLUE FINISH - Achieve a flawless, deep blue steel finish in moments—no waiting, no fuss.

Brownell Formula 44/40 Instant Gun Blue is a compact, liquid bluing solution designed for rapid, professional-grade steel finishing and brass aging. Trusted by gunsmiths and rated 4.6 stars by over 1,100 users, it delivers a deep, durable blue finish in seconds, making it an essential tool for firearm maintenance and restoration.

Specifications

ASIN	B00IYZBWC8
Air Gun Power Type	Spring-Piston
Barrel Material Type	Aluminum
Best Sellers Rank	#50,313 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #189 in Gunsmithing Tools
Brand	Brownells
Brand Name	Brownells
Color	Blue
Customer Reviews	4.5 out of 5 stars 1,130 Reviews
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 Kilograms
Manufacturer	Formula 44/40
Model Name	082440002
Product Dimensions	2.5"L x 1"W x 2.5"H
Team Name	Formula 44
UPC	762022610499
Warranty Description	Manufacturer Warranty

Reviews

D**R

16.12.2025

M**E

28.02.2025

G**O

7.10.2025

J**S

28.06.2023

G**4

6.08.2025

F**D

5.12.2025

M**D

25.08.2020

A**R

21.11.2025

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Rp600377

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In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Indonesia.

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