I want to suggest you add a suppressor to all of the sniper GFH's (including grace if you want). It is so helpful having a stealthy GFH like the sniper GFH in FCND (the granny).
I used no special tools. Just edited files from Resistance mod. Almost every weapon ID you can find in that mods. If you want to edit any package from Resistance mod, just copy it from ModifiedFiles_Resistance directory and place it to ModifiedFiles, Mod-Installer automatically loads the one from ModifiedFiles and you will also have backup of original package. Use WinRar or 7zip to open .a3 archives. It will take some time to figure out how the code inside works, but it is not difficult. More detailed information is in tutorials for FC5.
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