Hello MH. 7ac is ACPU = auxiliary computer power unit (Chambers). C is gicen as an abbreviation of colt (also CH), and I suppose "pulled" up.
Afro because it's the only word that fits - and Malian. Wordplay I'm afraid I don't know. I should say ata aguess that more than 50% of the wordplay here, and any others by Paul McKenna, I don't get.