What about Wonder Blue...has

[CharlieDaTuna]

anybody tried it or any other Bluing Applications in a bottle...lol... What are your thoughts and/or suggestions???    

My dad has used it on some old military pistols. Works really good for a fast "cold" blueing.

[ribbonstone]

The better the metal prep/polish, the better the final product.  Blue Wonder works pretty well...more a black than a blue, which is OK as that more closely matches factory hot-blues (whihc are pretty close to black).  Decently long wearing.

Brownel's Oxpho-Blue is another good product...easier to use, long wearing, and about as simple to apply as possible. Will be more of a blue, which won't match factory blue-black all that well, but it's so easy to apply and last so well, it tends to be my favorite touch-up or small parts blue.  Prefer the "creme" as it is easier to apply.