A blast control device for a firearm is disclosed. The blast control device may include a muzzle brake comprising a first end, a second end, a top, a bottom, a bore, one or more baffles, one or more gas openings disposed between the one or more baffles, an alignment channel disposed on the top, one or more gas holes disposed on the top within the alignment channel, an alignment groove disposed at an end of the alignment channel, and a latch notch. The blast control device also may include a blast shield attachable around the muzzle brake. The blast shield may include an alignment protrusion, a latch assembly, a plurality of internal ribs, and one or more gas ports.