Yes, the shoulder stock of this AK-47 is from a shovel. That's not the impressive part. The receiver--the housing for the action--is also from a shovel. Yes, really! Boris melted, reforged, reshaped, cut and welded the blade of a shovel into a completely functional receiver. The result is a beautiful piece of post-apocalyptic engineering.
Why did he do it? Boris isn't clear on the subject, but a fair amount of vodka went to the decision-making process. That belongs in everyone's OODA loop.