How to get reward for event Pb? (Metal Gear Solid 5: The Phantom Pain)

Oh BL, how much it costs...

Dmitry Макаров0_0
If spent, it received the award. It remains to explore in the tree, about five minutes on it will go.

Dmitry Макаров0_0
In the development of weapons hanging the drawing. It's just not the rifle, and drawing on its manufacturing...

Kapellimestari
Hattack
already knew