Flare gun looked rusty n' musty. A slap of red paint should make it look like it used to.
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Copy files to fallout 4 Data folder and make sure to replace "sResourceDataDirsFinal=STRINGS\" with "sResourceDataDirsFinal=STRINGS\, TEXTURES\" in your fallout.ini file under x:\username\documents\my games\fallout4.
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Copy files to fallout 4 Data folder and make sure to replace "sResourceDataDirsFinal=STRINGS\" with "sResourceDataDirsFinal=STRINGS\, TEXTURES\" in your fallout.ini file under x:\username\documents\my games\fallout4.