This is for all the classes if you go through them and you don't get items. If they just don't appear and you don't go through it, just go through it and see.

Alernative #1:
Follow these simple commands, put them in your console:
sv_Cheats 1
bot_Difficulty 100
bot_quota 30
bot_add (Please spam bot_add until it says teams are full)
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Alternative #2:
Go through the gate with the MP7 (That should trigger the new classes to work)
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If this didn't help you, comment below and I'll get it fixed ASAP.