Just so people can file this in their memory...
If modifications are made to the stock or cheek
weld, and if bare aluminum is showing,
Rustoleum flat black spray paint is such a
good match that I can't tell it from the
anodized coating. (at least on the cheek weld)
I milled off some of the cheek weld so I could
lower it all the way down, and I touched up
the edge and a scuff mark with Rustoleum 7776.