The BSA Mercury was a Break Barrel spring powered Air Rifle first produced in 1972, by BSA Guns Limited, Birmingham, UK, Gamo’s new subsidiary BSA Guns (UK) Limited. It was manufactured in .177 (4.5 mm) .22 (5.5 mm) & .25 (6.35mm) The latter named the “635 Magnum” The ‘Mercury’ model was marketed between the BSA Meteor and AirSporter. The Mercury was a light and easy to use rifle with a PTFE piston and breach seal, giving a “just under legal limit UK power” of 12 ft•lbf (16.2 J) of energy. Approximately 40,000 were produced.
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