• CAA Tactical
• Cabot Guns
• Caesar Guerini
• Caldwell
• Canik
• Carl Zeiss Sports Optics
• Chiappa Firearms
• Clothing
• Cold Steel
• Colt
• Coltellerie Maserin
• Combination rifle
• Concern Kalashnikov
• Crimson Trace
• Crispi
• CRKT
• Crosman
• Crye Precision
• Culture
• Cybergun
• CZ (Česká Zbrojovka)
• Consorzio Coltellinai di Maniago (Maniago Knife Makers)