Identification some parts of a Halifax Mk V

Hello

I’m looking to identify the 4 parts of an Halifax Mk V of the RAF.

[ATTACH=CONFIG]256375[/ATTACH]
[ATTACH=CONFIG]256376[/ATTACH]
[ATTACH=CONFIG]256377[/ATTACH]
[ATTACH=CONFIG]256378[/ATTACH]

Anyone can help me ?

Thank you

Fabrice