Welcome to the forum and the wonderful world of Krags!  Careful, they are quite addictive...

Everything Dick and Butlersrangers said is spot on.  I'll add one thing though: Once you've removed your hand guard, install a quarter and a nickel in the two spring clips.  The clips have pretty tight tension, and this will prevent the clips from pulling the handguard closed and cracking, while maintaining spring clip tension while the handguard is removed.  The quarter and nickel are about the same size as the barrel diameter where the clips sit.