M&P 40 Touchup Bluing

mblake101 · Jul 22, 2020

Hi - I’m fairly new to the forum and am seeking info as to how/what to use to touchup bluing (?) wear on slide lock lever and other slide control areas. The rest of the slide body is perfect. I was unsuccessful in locating useful content using various search terms in the search function. I am hoping that my learned colleagues within the forum will share their knowledge, and get me started on the right track. In advance, thanks much!

Rule3 · Jul 23, 2020

If it is the gun/finish I am thinking it is, it is not Blued but a black finish. You can use a black permanent marker or by some
BC touch up super black

[ame]https://www.amazon.com/dp/B00JSAE0ZY?tag=duckduckgo-ffsb-20&linkCode=osi&th=1&psc=1[/ame]

Dump1567 · Jul 23, 2020

This is what I use for touch-up:

4 oz Oxpho-Blue Cold Bluing : BROWNELLS OXPHO-BLUE(R) | Brownells

Babysitr · Jul 23, 2020

I use Van's....it is probably a lot like Brownell's....used on bare steel, works good

Rule3 · Jul 23, 2020

If it is this gun, it is not blued.
Slide Finish: Armornite®

ARCHIVE: M&P(R)40 | Smith & Wesson

dfariswheel · Jul 23, 2020

A better match for today's guns is Brownell's Dicrophan T4.

This is a black not the usual blue color and matches most guns much better.
As as added benefit, it's also possibly the most durable cold blue I ever tried and I've tried almost all of them.

The key to getting a good job is to thoroughly degrease the part with a solvent like Acetone or a soap cleaner, then after drying liberally spray the part or area with 91% or denatured alcohol.
WARM the area with a hair dryer....Note: WARM not hot until the alcohol evaporates and you see light moisture on the part and it disappears.
Apply a coat of T4 wait a few seconds an rinse off with clear water.

Apply alcohol again, warm again and repeat as many times as you want.

ContinentalOp · Jul 23, 2020

Keep in mind the slide, according to Rule3's link, is stainless steel.

M&P 40 Touchup Bluing

mblake101

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Rule3

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Dump1567

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Babysitr

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Rule3

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dfariswheel

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ContinentalOp

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