Metal Gear Solid V: The Phantom Pain has shipped 5 million units
In their latest financial report, Konami announced Metal Gear Solid V: The Phantom Pain has shipped 5 million units (including downloads) since its launch on September 1st.
The game is still doing fairly well in the charts two months after launch, so we can expect this number to increase.
Source: Konami Financial Report, via Gematsu