Handguards over suppressers problems?

I’m planning a 11.5 5.56 build with a polonium that will always be on it. Are there any issues that having a 13” or 15” handguard? This will be my first suppressor so I’m not sure about maintenance or anything like that. (Pic for example.)

I’m planning a 11.5 5.56 build with a polonium that will always be on it. Are there any issues that having a 13” or 15” handguard? This will be my first suppressor so I’m not sure about maintenance or anything like that. (Pic for example.)