replace m4 skins > zUrt43_008 > models > weapons2 > M4
replace Lr skins > zUrt43_008 > models > weapons2 > zm300
replace Handskins > zUrt43_008 > models > weapons2 > handskins
replace Headskin/facemask > zUrT43_005 > models > players > athena > head

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add zzzz_skybox.pk3 to your q3ut4 folder to change skyboxes of Casa, Austria, Tohunga, Kingdom
remove zzzz_skybox.pk3 from your q3ut4 folder to go back to default skyboxes

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skybox by delirium, skins by nano