In the RAGE Engine (used by GTA V), archives act as containers for the game's internal assets. Based on standard modding naming conventions, a file named antecarabine.rpf typically stores:

: Information regarding damage, range, and animations may be linked through associated .meta files. File Structure & Installation

It is generally placed in the folder to prevent original game file corruption.

A typical path for weapon replacements would be: GTAV/mods/update/x64/dlcpacks/patchday8/dlc.rpf/x64/levels/gta5/models/cdimages/weapons.rpf . :

Files are often placed in the FiveM Application Data/mods folder or directly into a server's resource folder for streaming to players.