Likely designed to minimize vertical and horizontal kick when firing weapons in games.
Use a multi-engine scanner like VirusTotal to check for hidden threats. PeGre_RCS.rar
If you must open it, do so in a virtual machine or a "sandbox" environment to protect your main OS. Likely designed to minimize vertical and horizontal kick
Only use scripts from reputable community developers with visible feedback. PeGre_RCS.rar