Couple of months ago i was searching for a mod that would let you rename the guns because i was tired of the same old boring names and wanted to rename them to something funnier, but found none sadly
which is why i decided to make this simple mod using offyerrocker's Simple Localization Mod Templete
Currently features every gun in the game barring the Airbow (because who uses that?)

To rename a gun, find its string in the text file and change its in game name to whatever you want it to be (so for example, to rename the CAR-4 you will have find it in the text file under the Rifles category and change "CAR-4" into whatever you want, just dont remove the quotation marks)