I could not find this Magpul stock in black anywhere. I was able to find a used, partially dyed tan one on a forum for a low price and decided to buy it and try furniture dyeing for the first time.
It was originally tan. The previous owner had dyed it an OD/FDE combo. Sorry no before pics. Totally forgot!
8oz of black. 2oz dark green (I read some threads on Arfcom. Straight black will have a purplish hue to the part. The green helps to take care of that.). Bring water to boil. Add dye. Mix well. Simmer parts for (30) minutes.
This is the result. Not sure on durability. But it‘s black now!