All the reports I've read suggests he saw an AK47 sticking out of the bushes.
Not the tool for an accurate, long-range pot. Especially in a country where you can easily buy a far superior alternative, and the alleged shooter had a service background.
Commentator on R5L said that 300-500 yds was well doable, so from that I presumed the gun was more "snipery", as I've seen AKs cited as being "wildly inaccurate" beyond 300 yds.