Since release there have been unusued black Carryall Backpack in the game files, which is unused for no reason despite it having proper textures and UI icon. Here is config and string to bring it back:
Config (weapons_f.pbo)
class B_Carryall_blk: B_Carryall_Base { author = "$STR_A3_Bohemia_Interactive"; _generalMacro = "B_Carryall_blk"; scope = 2; displayName = "$STR_A3_B_Carryall_blk0"; picture = "\A3\Weapons_F\Ammoboxes\Bags\data\UI\icon_B_C_Tortila_blk.paa"; hiddenSelectionsTextures[] = {"\A3\weapons_f\ammoboxes\bags\data\backpack_tortila_blk_co.paa"}; };
Stringtable (language_f.pbo):
<Key ID="str_a3_b_carryall_blk0"> <Original>Carryall Backpack (Black)</Original> <Chinese>全容量大背包(黑)</Chinese> <French>Sac à dos multifonction (noir)</French> <Spanish>Bolsa de viaje (negra)</Spanish> <Italian>Zaino portatutto (nero)</Italian> <Polish>Plecak (czarny)</Polish> <Russian>Рюкзак (черный)</Russian> <German>Großer Rucksack (schwarz)</German> <Czech>Univerzální batoh (černý)</Czech> <English>Carryall Backpack (Black)</English> <Portuguese>Mochila de carga (preta)</Portuguese> <Korean>다용도배낭(흑색)</Korean> <Chinesesimp>大旅行包(黑色)</Chinesesimp> <Japanese>キャリーオールパック(黒)</Japanese> <Turkish>Büyük Sırt Çantası (Siyah)</Turkish> </Key>