It was a Sinclair-branded Far Eastern product which was included in promotional bundles such as the "James Bond 007 Action Pack", along with a small number of lightgun-compatible games.
Only a few games bothered with lightgun compatibility (Operation Wolf, the original arcade gun game, was the most notable[1]) and fewer still were produced specifically for use with the Magnum.
Software Creations created five exclusive games for the Commodore 64 package.
ZX Spectrum: Bundled with the Commodore 64 version: Bundled with the Commodore 64 Lightgun package, and compatible with the Magnum:
This video game-related article on computer hardware is a stub.