Finish on my Ruger 22/45

[Zappa]

While pulling my Ruger 22/45 apart , i dropped the barrel on concrete and scratched up the surface. I flattened the abrasions with some 1200, 1500 and 2000 grit but now I've remove the black color or blueing.

How would I touch it up and get it back to original finish ? I've heard about Birchwoods cold blue but have my reservations on longetivity and finish.

[deye243]

You're right to have reservations none of the cold bluing agents really work properly .
if it is a proper blued finish it needs a trip to the gunsmith with a hot bluing tank and getting it done properly if that's what you want

[Farmerpete]

Birchwoods worked ok for me, I was only using it on a charging handle on my shotgun so it didn't really matter how crap it turned out because it wasn't visible.
I did notice that there was a little colour difference from the original bluing, using it on a barrel might be tricky as you'd have to blend it.
You could give it go and see if you like it it's a lot cheaper than a gunsmith and you can always go to them later

[Zappa]

You could give it go and see if you like it it's a lot cheaper than a gunsmith and you can always go to them later

Might pick up a bottle of Super Blue when im next at my LGS and give it a go. It's only really for touch up but yeah, blending will be issue i reckon.

[lcpltac]

Duracoat make Blue coatings. Matte, satin or gloss blue. I just finished an old Lithgow .22 with a Matte blue finish and it came up a treat