Hi Shaun,
Thanks for organising this one.
I wish I had known about these when I build my Mk V's, the turret mounted version I have seen on a few Mick Tanks:


As it was i had tio nick a set from the AFV Stuart and botch a set by cutting up 2 SMLEs and drilling out some tubes. Life!!
If you are contemplating the New Tasca M4A4 Sherman Mk V or any of the Universal carrier options these are a neat extras.
This is one I added to the Mk I carrier - excuse the headless horsman:D

Al