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Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz

★ 4.7 · 2,429 ratings
$33.19

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Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz, $33.19, Availability unknown. Image 1 of 7.

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Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz
SKU
JC2668
Explore product details ↓

Source specifications

Brand
Brownells
Color
Blue
Finish Type
Gloss
Size
4 Fl Oz (Pack of 1)
Item Volume
4 Fluid Ounces
Special Feature
Rust Resistant
Unit Count
4 Fluid Ounces
Paint Type
Conversion Coating
Surface Recommendation
Metal
Item Form
Liquid
Is Discontinued By Manufacturer
‎ No
Product Dimensions
‎ 1 x 1 x 1 inches; 3.17 ounces
Item model number
‎ Oxpho-Blue Professional Grade Cold Blue
Department
‎ Oxpho-Blue Professional Grade Cold Blue
Date First Available
‎ January 24, 2015
Manufacturer
‎ Barg Engine
ASIN
‎ B00SOUKFLW
Best Sellers Rank
#7,561 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #28 in Gun Lubrication
Customer Reviews
4.7 4.7 out of 5 stars (2,429)

The details

About this item

Buy Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL) on .com ✓ FREE SHIPPING on qualified orders Absolutely no after-rust; Ease of application and remarkably superior results; With Oxpho-Blue, all you need do in most cases, is dampen a piece of cotton flannel and give the area a good rubbing Rated 4.7 out of 5. Customers find the cold bluing solution works well, with one noting it performs as effectively as more expensive alternatives.

  • Absolutely no after-rust
  • Ease of application and remarkably superior results
  • With Oxpho-Blue, all you need do in most cases, is dampen a piece of cotton flannel and give the area a good rubbing

Product information

Materials and care

Finish Type
Gloss

From the manufacturer

Product details and media

Buy Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL) on .com ✓ FREE SHIPPING on qualified orders

Highlights: Absolutely no after-rust Ease of application and remarkably superior results With Oxpho-Blue, all you need do in most cases, is dampen a piece of cotton flannel and give the area a good rubbing

Key details: Is Discontinued By Manufacturer: ‎ No | Product Dimensions: ‎ 1 x 1 x 1 inches; 3.17 ounces | Department: ‎ Oxpho-Blue Professional Grade Cold Blue | Customer Reviews: 4.7 4.7 out of 5 stars (2,429)

How it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out.

Customer feedback: 4.7/5 average rating.

Customers say: Customers find the cold bluing solution works well, with one noting it performs as effectively as more expensive alternatives.

Review snippets: Works great, clean well with alcohol, preheat and use clean cotton ball’s, and rubber gloves, was very impressed with the quality and the finish Read more / This stuff is amazing. I blued several of my tools completely and did some touch ups. It works in 10-15 seconds (under one minute). The trick is to to clean the surface very well to remove any grease with acetone

Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 1Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 2Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 3Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 4Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 5Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 6Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 7Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 8Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 9Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 10Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 11Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 12Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 13Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 14Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 15Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 16Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 17Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 18Brownells Oxpho-Blue Liquid Gun Blue Cold Bluing Solution Gunsmithing Tools Maintenance Cleaning Supplies Professional Grade 4 Fl oz — product detail 19

Customer feedback

Customer ratings

4.7 out of 5

2,429 ratings

Customers find the cold bluing solution works well, with one noting it performs as effectively as more expensive alternatives.

Stephen Stasko

5.0 out of 5 stars Great product

Rating: 5

February 22, 2026

Verified purchase

Works great, clean well with alcohol, preheat and use clean cotton ball’s, and rubber gloves, was very impressed with the quality and the finish Read more

Mikhail

5.0 out of 5 stars Amazing product

Rating: 5

January 2, 2026

Verified purchase

This stuff is amazing. I blued several of my tools completely and did some touch ups. It works in 10-15 seconds (under one minute). The trick is to to clean the surface very well to remove any grease with acetone or alcohol. Also, I got a better result by using a wire brush vs recommended #0 steel wool after bluing. The black coating is basically also a type of rust and it is porous and to prevent regular rusting you need to apply any oil or wax as a rust inhibitors after bluing which will be absorbed and retained by the black coating creating a barrier for regular rust. Read more

s & w

5.0 out of 5 stars Cold blueing with brownell's oxfro

Rating: 5

March 5, 2025

Verified purchase

I have done 3 22cal rifles so far ranging in age from 85 years to 54 years old. All have came out excellent, the coverage was a dark uniform color and was easy to apply. I did slightly heat the barrel with heat gun and burnished with 0000 steel wool between coats. Read more

Gnz24

4.0 out of 5 stars Works in right parameters

Rating: 4

August 6, 2025

Verified purchase

Gives steel a good protective shield but comes out blotchy if you use it on large areas too quickly. The key to applying blue effectively is prep, cleaning, and good surface conditioning. The best way to apply this would be a sand blasted surface. If you only want to use this on small area it should be fine. Don’t use on large area unless you’re taking your time and have done a lot of sanding/conditioning to the metal surface. Read more

David

5.0 out of 5 stars Works well.

Rating: 5

October 29, 2025

Verified purchase

Did its job well for me. When done right will give a proper cold blue finish. Remember to always pour the needed amount out into a separate container when using it in order to not contaminate the main bottle. The lowest price for quality cold blue when I bought it. No complaints. Read more

Tom Anderson

5.0 out of 5 stars Works well.

Rating: 5

December 19, 2025

Verified purchase

Followed the instructions. Didn't have any problems. Always coat it with oil after you've got the finish you desire. For me, it only took one dip. Oh - and never put used any fluid back in the bottle! Read more

R. Witschard

5.0 out of 5 stars Great Product

Rating: 5

January 29, 2026

Verified purchase

This a great product and I find this works better than the other cold blues I have tried. Of course there is always some steel that other products work a bit better on, but this does give a good color match on old rust blued items. Read more

ckuethe

5.0 out of 5 stars Excellent way to get started in bluing metal

Rating: 5

May 25, 2020

Verified purchase

Like everyone says, clean your metal, and then clean it some more. When you've finished that, clean it one more time. I sanded my test pieces with 80, 120, 220, and 400 grit, then gave them a couple wipes with acetone until my paper towel came away clean. The finished pieces had no uneven coating. Also, use small amounts on a clean applicator. I had acceptable results with a small amount in a plastic cup applied with a paintbrush, but doing that will contaminate the solution. Dropping pieces into the solution made for a super dark finish, but also left residue in the solution.... so don't do that (at least not on the first coat). It's easy to fix mistakes and blemishes with some fine sandpaper and acetone. Sand off the blue, clean the work of fingerprints and sanding dust, then reapply. To my eyes I couldn't see my blue repair area. Seems to work very well with welds. I did some simple tests with mild steel and ER70S-6 wire shielded with C25 gas. It is possible to weld through the blue layer, though for serious applications you should clean the blue off the metal. Both the base metal and the weld bead blued nicely after cooling and cleaning. Read more

Complete product information
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    "items": [
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        "title": "5.0 out of 5 stars Great product",
        "body": "Works great, clean well with alcohol, preheat and use clean cotton ball’s, and rubber gloves, was very impressed with the quality and the finish Read more",
        "author": "Stephen Stasko",
        "rating": 5,
        "date": "February 22, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Amazing product",
        "body": "This stuff is amazing. I blued several of my tools completely and did some touch ups. It works in 10-15 seconds (under one minute). The trick is to to clean the surface very well to remove any grease with acetone or alcohol. Also, I got a better result by using a wire brush vs recommended #0 steel wool after bluing. The black coating is basically also a type of rust and it is porous and to prevent regular rusting you need to apply any oil or wax as a rust inhibitors after bluing which will be absorbed and retained by the black coating creating a barrier for regular rust. Read more",
        "author": "Mikhail",
        "rating": 5,
        "date": "January 2, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Cold blueing with brownell's oxfro",
        "body": "I have done 3 22cal rifles so far ranging in age from 85 years to 54 years old. All have came out excellent, the coverage was a dark uniform color and was easy to apply. I did slightly heat the barrel with heat gun and burnished with 0000 steel wool between coats. Read more",
        "author": "s & w",
        "rating": 5,
        "date": "March 5, 2025",
        "verified": true,
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      },
      {
        "title": "4.0 out of 5 stars Works in right parameters",
        "body": "Gives steel a good protective shield but comes out blotchy if you use it on large areas too quickly. The key to applying blue effectively is prep, cleaning, and good surface conditioning. The best way to apply this would be a sand blasted surface. If you only want to use this on small area it should be fine. Don’t use on large area unless you’re taking your time and have done a lot of sanding/conditioning to the metal surface. Read more",
        "author": "Gnz24",
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        "verified": true,
        "images": []
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      {
        "title": "5.0 out of 5 stars Works well.",
        "body": "Did its job well for me. When done right will give a proper cold blue finish. Remember to always pour the needed amount out into a separate container when using it in order to not contaminate the main bottle. The lowest price for quality cold blue when I bought it. No complaints. Read more",
        "author": "David",
        "rating": 5,
        "date": "October 29, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Works well.",
        "body": "Followed the instructions. Didn't have any problems. Always coat it with oil after you've got the finish you desire. For me, it only took one dip. Oh - and never put used any fluid back in the bottle! Read more",
        "author": "Tom Anderson",
        "rating": 5,
        "date": "December 19, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Great Product",
        "body": "This a great product and I find this works better than the other cold blues I have tried. Of course there is always some steel that other products work a bit better on, but this does give a good color match on old rust blued items. Read more",
        "author": "R. Witschard",
        "rating": 5,
        "date": "January 29, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Excellent way to get started in bluing metal",
        "body": "Like everyone says, clean your metal, and then clean it some more. When you've finished that, clean it one more time. I sanded my test pieces with 80, 120, 220, and 400 grit, then gave them a couple wipes with acetone until my paper towel came away clean. The finished pieces had no uneven coating. Also, use small amounts on a clean applicator. I had acceptable results with a small amount in a plastic cup applied with a paintbrush, but doing that will contaminate the solution. Dropping pieces into the solution made for a super dark finish, but also left residue in the solution.... so don't do that (at least not on the first coat). It's easy to fix mistakes and blemishes with some fine sandpaper and acetone. Sand off the blue, clean the work of fingerprints and sanding dust, then reapply. To my eyes I couldn't see my blue repair area. Seems to work very well with welds. I did some simple tests with mild steel and ER70S-6 wire shielded with C25 gas. It is possible to weld through the blue layer, though for serious applications you should clean the blue off the metal. Both the base metal and the weld bead blued nicely after cooling and cleaning. Read more",
        "author": "ckuethe",
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        "date": "May 25, 2020",
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  "short_description": "Buy Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL) on .com ✓ FREE SHIPPING on qualified orders.",
  "about_this_item": "Buy Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL) on .com ✓ FREE SHIPPING on qualified orders Absolutely no after-rust; Ease of application and remarkably superior results; With Oxpho-Blue, all you need do in most cases, is dampen a piece of cotton flannel and give the area a good rubbing Rated 4.7 out of 5. Customers find the cold bluing solution works well, with one noting it performs as effectively as more expensive alternatives.",
  "long_description": "Buy Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL) on .com ✓ FREE SHIPPING on qualified orders\n\nHighlights: Absolutely no after-rust Ease of application and remarkably superior results With Oxpho-Blue, all you need do in most cases, is dampen a piece of cotton flannel and give the area a good rubbing\n\nKey details: Is Discontinued By Manufacturer: ‎ No | Product Dimensions: ‎ 1 x 1 x 1 inches; 3.17 ounces | Department: ‎ Oxpho-Blue Professional Grade Cold Blue | Customer Reviews: 4.7 4.7 out of 5 stars (2,429)\n\nHow it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out.\n\nCustomer feedback: 4.7/5 average rating.\n\nCustomers say: Customers find the cold bluing solution works well, with one noting it performs as effectively as more expensive alternatives.\n\nReview snippets: Works great, clean well with alcohol, preheat and use clean cotton ball’s, and rubber gloves, was very impressed with the quality and the finish Read more / This stuff is amazing. I blued several of my tools completely and did some touch ups. It works in 10-15 seconds (under one minute). The trick is to to clean the surface very well to remove any grease with acetone",
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    {
      "type": "p",
      "text": "Buy Brownells Oxpho-Blue Liquid Gun Blue, Cold Bluing Solution, Gunsmithing Tools Maintenance Cleaning Supplies, Professional Grade, 4 Fl oz. (118.2 mL) on .com ✓ FREE SHIPPING on qualified orders"
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      "text": "Highlights: Absolutely no after-rust Ease of application and remarkably superior results With Oxpho-Blue, all you need do in most cases, is dampen a piece of cotton flannel and give the area a good rubbing"
    },
    {
      "type": "p",
      "text": "Key details: Is Discontinued By Manufacturer: ‎ No | Product Dimensions: ‎ 1 x 1 x 1 inches; 3.17 ounces | Department: ‎ Oxpho-Blue Professional Grade Cold Blue | Customer Reviews: 4.7 4.7 out of 5 stars (2,429)"
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      "text": "Customers say: Customers find the cold bluing solution works well, with one noting it performs as effectively as more expensive alternatives."
    },
    {
      "type": "p",
      "text": "Review snippets: Works great, clean well with alcohol, preheat and use clean cotton ball’s, and rubber gloves, was very impressed with the quality and the finish Read more / This stuff is amazing. I blued several of my tools completely and did some touch ups. It works in 10-15 seconds (under one minute). The trick is to to clean the surface very well to remove any grease with acetone"
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