@MAA_Bunny AK-Alfa is U.S./Israeli design
The Alpha AK is not the same thing as the AK Alfa. The two don't even look alike, and the AK Alfa looks nothing like what we have in-game.
The "Alpha AK" isn't an officially classified thing, but is generally used to refer to a heavily modified standard AK, usually an AK-74, inspired by the custom weapons used by Russia's Alpha Group. Officially FSB Special Purpose Center Directorate A: "Alpha Group" is in many ways the Russian equivalent of the US Army's Delta Force.
Larry Vickers seems to be largely responsible for coining the term after talking about rifles he saw on a training expedition with Alpha Group. You can watch him walk through his setup here: