DICROPAN T-4® Reviews & Ratings

DICROPAN T-4 ROUCH-UP LIQUID GUN BLUE

T-4 is in the catalog because of customer demand. As Maynard Buehler said: "THIS is the BEST yet." Every time a new gun blue comes on the market, we test it on a piece of gun barrel. We blue three spots: one with the new blue, one with Oxpho- Blue™ and one with T-4. One day later we start rubbing all three areas with steel wool until one of them starts wearing off. So far, Oxpho Blue™ is toughest and T-4 next. However, for ease of application and deep density of color, T-4 is superior. Its ability to touch-up wear areas and scratches instantly has made it a favorite.

SPECIFICATIONS:

Available in 4 oz and 32 oz. Bottles
Instanlty Touch-Up
Must Ship Ground

View Product

Write a review

5 Stars

100%

4 Stars

3 Stars

2 Stars

1 Stars

Reviews Summary

Customers are extremely satisfied with Dicropan T-4®, praising its effectiveness and versatility for touch-ups and restorations. Reviewers unanimously emphasize its quality and performance, noting it as a reliable choice for various bluing needs without any significant negatives mentioned.

What Reviewers Are Saying

Product Effectiveness

100%

Reviewers consistently commend Dicropan T-4® for its superior performance in touch-ups and bluing, with many noting it outperforms other products they have used over the years.

Ease of Use

86%

Users appreciate the straightforward application process, highlighting the importance of prep work for optimal results. Many found it simple to achieve desired outcomes with careful use.

Value for Money

71%

Several reviews mention that Dicropan T-4® offers excellent value, being effective and less expensive compared to other products in the market, enhancing overall customer satisfaction.

Sort by Filter by rating

Excellent!!

I needed something for re-blacking part of a Glock slide. This did the trick.

by CRAIG E. on April 03, 2026

Verified Purchase

Was this review helpful? 0

great product

I have been using this for years restoring older weapons and touch up. prices change but this really works!

by PATRICK C. on June 13, 2025

Verified Purchase

Was this review helpful? 1

Great Results!

For years, I have been a big fan of Brownells 44/40 and have used it as the standard for testing other cold bluing products. I had also previously used the "creme" version of Dicropan T-4 and did not particularly like it. However, I now have to say after doing fairly extensive (non-scientific) testing of the Dicropan T-4 Liquid that I am replacing my 44/40 with it. It not only works as well or better than any other I have tried, but it is also less expensive!

Great alternative to cold blueing

This is a great product for touch ups and blending in dings or scratches. Like the directions say, prep is crucial. Clean/degrease area, then dry. Wipe/blot on (a saturated Q tip works great) let sit for a few seconds. Then wipe off with same bore cleaner/degreaser. Then I found you can rub in a little oil to seal in the color. Not so much for complete bluing, but deffinetly great for touch ups and blending any scratches. This sets as a really nice 'dark black' color when done. Works with carbon steel only. Hope that info helps.

easy

I only need a drop or two occasionally and shelf life is excellent.

Dicropan T-4

Have a Ruger P95 with the plum colored slide. Regular cold blueing products would not work,but Dicropan T-4 gave it an even and deep black color. Looks brand new.

the best !!

Fantastic product for touching up my WW1/WW2 collection !!!