Milspec Posted July 29, 2019 Share Posted July 29, 2019 Does anyone have suggestions for black touch up? I have a little scratch on my M4 receiver and it bugging the hell out of me. Quote Link to comment Share on other sites More sharing options...
Scout_21 Posted July 29, 2019 Share Posted July 29, 2019 Learn to embrace the scratches. Otherwise aluminum black by birchwood casey is an ok touch up but it can get rubbed off easily enough.. Keep in mind this is an oxidizer and not a paint. Quote Link to comment Share on other sites More sharing options...
Sukhoi_fan Posted July 29, 2019 Share Posted July 29, 2019 Use a Sharpie. Quote Link to comment Share on other sites More sharing options...
NineInchNails Posted July 30, 2019 Share Posted July 30, 2019 I've used Sharpie markers and I do not like how it contrasts on AR-15's anodizing. It clashes pretty bad. I have also tried the Birchwood Casey anodizing marker and it works pretty darn good. There is still a bit of contrast, but I haven't heard of anything that does a perfect job. Pretty much anything you apply will look different because it is different (not anodizing). Quote Link to comment Share on other sites More sharing options...
Scout_21 Posted July 31, 2019 Share Posted July 31, 2019 Yeah, if you really want to fix it look at cerakoting like Stranger Danger or perhaps Armor Lube by Robar. I'm looking at armor lubing (strange verb) my m3 by them as the forend wore through the anodizing pretty quickly on my reciever. Quote Link to comment Share on other sites More sharing options...
Milspec Posted July 31, 2019 Author Share Posted July 31, 2019 (edited) Funny you mention Robar. I’ve had them do Glock work and NP3+ some rifle components in the past. They do great work. I’m looking at the Poly-T2 because of the color variety. I remember reading that they can’t apply Armor Lube to aluminum. My concern is having to totally disassemble the M4. I’m confident that I can do it but I have no idea what the torque specs are for the top rail screws, receiver extension etc. Although I don’t do 3 gun it might be nice to open up the loading port a small amount. Edited July 31, 2019 by Milspec Quote Link to comment Share on other sites More sharing options...
Scout_21 Posted July 31, 2019 Share Posted July 31, 2019 Ah you're right... no armorlube on aluminum... Poly-t2 does seem like a viable alternative Quote Link to comment Share on other sites More sharing options...
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