King's African Rifles badges help

[sapper533]

Hi folks

Sorting out my colonial badges and I came across these which I could do with some help.

1. Is a standard cap badge size KAR KC badge but in orrible cast tin/ aluminium is this right or is it another crap Pakistani fake?

2 and 3 are collar dog size but with pin fitting as opposed to lugs, are this for wear on the Fez?

4 is a lovely hallmarked silver collar sized badge lugs north and south, is there any way of knowing if this is an officers collar badge or beret badge?

Cheers
Sean