I came across the images of this AR-15 rifle with an AK-47 underfolder stock in one of the gun-related online communities. Normally, cool images like these are shared all over the Internet and often times it is virtually impossible to find the original source. However, there are always exceptions. I was lucky enough not only to find the man who made this gun but also get the details of the story along with a bunch of photos and his permission to publish them.
Andrew Michaels, the creator of this gun, told me that he started the project simply because he had an extra underfolder laying around and he thought why not to try to fit an AK stock to an AR? So the answer to the question “why, though?” is “just for fun!”.
Having a goal to make the whole assembly as short as possible, Andrew chose the Gunsmoke Enterprise buffer assembly which has a really short buffer tube/receiver extension. Making the adapter was a simple task for Andrew. Here is how he describes the process:
I just turned a tube on the lathe till I had a nice fit on the buffer tube, machined as much as I could off the rear trunnion section then welded them together. I had to cut a slot in the top of the tube so I could access the internals for disassembly of the folder. The last thing was a set screw on the bottom of the tube to keep the assembly from rotating.