Very cool thanks for the info.Steve has more or less answered, Airmasters were a Airgun tuning company based in Luton England in the 1980’s
They started offering tuning and stocks for the emerging Field Target scene initially tuned FWB Sports called Mastersport, when the HW77 emerged they then offered tuned variants of those
The Chameleon was an interchangeable barrel variant based on the 77 offering .177, .20, .22 and .25 barrels
Unable to post anymore pictures unfortunately
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