Chevrolet CGT - What is this?

[kosbie]

Originally Posted by Maurice Donckers

These Brackets fit the P60 Box .
The P60 Box was for the Armour Piercing rounds.

Thanks Maurice
I like the idea of them being for the P60 box as it makes sense having the AT shot readily to hand for emergencies. However, when I tried a couple of P60 boxes in mine they didnt quite fit - the box is about 1cm too long, so I am still not 100% sure.
Rick