Touch up bluing on AR barrel?

[madAB]

I replaced the stock front sight on my AR and the barrel is not blued where the sight was. The new sight has a slightly different foot print so it shows a little. What do you guys recommend for touch up to cover the bare metal?

Also, does anyone have an extra gas tube roll pin? I flared mine out reinstalling it and it will not seat properly. I'd be happy to paypal you for it.

Thanks

[Lycanthrope]

Flat black rustoleum barbecue grill paint is pretty close.


Lycanwalmartthrope