Now that you mention it....the ones in the photo are not a million miles away from T-60 tracks which would make sense. And teh T-60 did have double guide horns.
So you could be onto something there in that the M-05 was probably still using T-60 tracks even though the casemate had changed to something else.
I have built a T-60 before but it was in 1:10 and I just used roller chain for tracks as I am not someone who could tackle home made tracks.
Its really a pity there is not more information about these machines. I guess the built ones just vansihed into RUssia once they got to Romania.
P