Tank machine guns

[cbo]

Originally Posted by Pibwl

However, some BMGs had a telescope sight, like Besa (at least newer mountings), Soviet DT (in T-34 at least - https://commons.wikimedia.org/wiki/F...tyaryov_DT.JPG) and Polish wz.25 of TKS tankette (but not the one in TK-3 tankette). There was of course a limited field of view, but it's not a matter of range, I think.

I believe the T-34 "sight" you refer to is a post-war modification. You'll notice that the sight does not go all the way to the sighting hole in the MG mantlet. I suspect the modification is made to give the hull-gunner a place to rest his forehead and align his view with the hole in the mantlet. Not sure how much of a sight it actually is - perhaps more a viewing aid.

I found a drawing here (1949 manual): https://www.scribd.com/doc/60892532/...5-%D0%A2%D0%9E . Scroll down to page 74.