The item ID for "Ronin" Semi-auto Rifle (Uncommon) is 18161
This is the spawn command to give yourself "Ronin" Semi-auto Rifle (Uncommon) in The Front.
Copy the command below and paste it into the server admin console to obtain. You can open the console by pressing the backtick (`) on your keyboard.
If playerID is empty, the item will be given to yourself.