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.

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Brownell Formula 44/40 Instant Gun Blue

Product ID: 6077112

Details

Air Gun Power Type
Spring-Piston
Barrel Material Type
Aluminum
Brand
Brownells
Color
Blue
Frame Material
Plastic
Item Weight
0.06 Kilograms

⚡Instant action

🧴Compact 2oz bottle

🛠️Precision metal finish

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R$257

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Transform your metalwork instantly with Brownell’s Formula 44/40!

VERSATILE USE - Ideal for steel and brass parts, enhancing both aesthetics and protection.
TRUSTED BY PROS - Highly rated with 4.5 stars from over 1,100 users in gunsmithing circles.
COMPACT AND CONTROLLED - Small 2oz bottle designed for precise application without waste.
LIGHTNING FAST RESULTS - Experience near-instant metal bluing with just a brush-on application.
PRECISION AGING FOR BRASS - Perfectly ages brass components for that authentic vintage look.

Brownell Formula 44/40 Instant Gun Blue is a professional-grade liquid solution designed for rapid and precise bluing of steel and aging of brass parts. Its compact 2oz bottle allows for controlled brush-on application, delivering consistent, high-quality finishes favored by gunsmiths and metalworkers alike. With a strong reputation and over 1,100 positive reviews, it’s the go-to choice for those seeking instant, reliable metal enhancement.

Specifications

ASIN	B00IYZBWC8
Air Gun Power Type	Spring-Piston
Barrel Material Type	Aluminum
Best Sellers Rank	#43,537 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #103 in Gunsmithing Tools
Brand Name	Brownells
Color	Blue
Customer Reviews	4.6 4.6 out of 5 stars (1,133)
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
Team Name	Formula 44
UPC	762022610499
Warranty Description	Manufacturer Warranty

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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R$257

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered 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 Brazil.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

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The product quality is outstanding. Exactly what I needed for my work.

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