Here is a script that will allow you to have no recoil on multiple Roblox fps titles.
It is confirmed to be working on Phantom Forces on Arsenal.

For Arsenal set Value 1 to 4, Value 2 to 1, Value 3 to 4
For Phantom Forces set Value 1 to 10, Value 2 to 1, Value 3 to 1

• Universal No Recoil