I also have black windowless Magpul mags.
See here for my sales history: https://bitcointalksearch.org/topic/m.997362
Please specify what you are interested in:
1. Pack of 5, 30 Round Magpul GenM2 Flat Dark Earth, Window, 1.75 BTC total including shipping.
2. Pack of 5, 30 Round Magpul GenM2 Black, Windowless, 1.5 BTC total including shipping.
3. Pack of 5, 30 Round Magpul GenM2 Black, Windowless, 1.5 BTC total including shipping. (another set of the same 5 black mags)
Due to state law restrictions, high capacity magazines can not be shipped to the following states: CA, CT, NJ, NY, MA, MD, HI and D.C.
Void where prohibited