The mod didn't work, so I found a solution myself.
Please share the solution.
Sorry for my poor English.
Go to the folder where ME3 is installed:
Mass Effect Legendary Edition\Game\ME3\BioGame\CookedPCConsole\Coalesced.bin
*Back up the original file before overwriting it*
1. Decompile the Coalesced.bin file.
[Drag the file into ME3Tweaks Mod Manager to decompile the bin file. This will create a Coalesced folder.]
2. Go to the Coalesced folder. Open the BioWeapon.xml file in Notepad.
3. Under the section with the weapon name, you'll find recoil, zoomrecoil, etc.
4. Change the (x=y=) values to your desired values. Setting it to 0 will remove recoil.
5. Save the file.
6. Compile the Coalesced.xml file into a bin file inside the created Coalesced folder. [Drag the Coalesced.xml file into the ME3Tweaks Mod Manager.
This will create a new Coalesced.bin file in the folder.]
7. Overwrite the newly created Coalesced.bin file.
Ta-da! Success