Many of the ANC freedom fighters use the AKM as their main weapon for their struggle against apartheid.
This looks like the Polish AKM model, like in Hotel Rwanda. [1]
RPG-7
In the scene when Patrick (Derek Luke) is training with the ANC, some ANC trainees can be seen with RPG-7s.
M79 grenade launcher
when the soldiers assault the ANC headquarters, one of them can seen with an M79 grenade launcher.
Beretta 76
Nic Vos' (Tim Robbins) sidearm is Beretta 76 which he uses several times in the film.
That's a Vektor Z88, a Beretta 92 copy made by South Africa. I don't know how to edit pages, but here's a link to a pic of it in case anyone wants to change it. - michaelbii [2]
Walther P38
A police officer with Nic Vos brandishes a Walther P38 as they pursue Patrick Chamusso.
Winchester Model 1912
Soldiers carry various weapons like the Winchester Model 1912 to pursue Patrick Chamusso at the plant.
Tokarev TT-33
Patrick Chamusso (Derek Luke) brandishes a Tokarev TT-33 as one of his weapons for the bombing of the Secunda Plant.