Turret Armor ratings for Pintle mounts

[Gooseman2448]

I have checked all the info and I cannot find anything to explain to me why turret armor for light vehicles with pintle mounted weapons have a turret armor rating.

I would think that just a weapon mounted would be 0.
If there was a front shield then a 1 in the front.
Something like the M-113 ACAV = 1 all the way around.
with no top armor.

some of the new armor (clear) and Isreali enclosed coupulas i think can match some light armor ratings, I am just lookking for some clarification on this. HMMWV's get a 0 rating with a pintle mount so I wonder why APC's an armored car get extra.

Thanks,

I am not at home to get specific info for a proper issue report.