MFT, or 'Metaalwarenfabriek Tilburg', was specialized in metal pressings, so the production of magazines for Mauser (HSc from 1968-1977 and Parabellum 1970-1985) should have been easy. But they had a lot of problems getting the form and function in order. They eventually just supplied the tubes to Mauser and Mauser assembled their magazines themselves.
The exact situation is not fully clear, but from what I understood MFT decided to manufacture Parabellum magazines for the commercial market directly and marked them with Mauser and 'Made in Holland'. Mauser then objected against MFT using their logo without consent, so MFT dropped the Mauser banner and only kept 'Made in Holland'. I believe most were sold directly to Interarms for resale.
MFT did advertise with HSc manual production in their company brochures, but I doubt they sold any of them on the commercial market. They had a tendency of going bankrupt every decade or so. They did produce metal stampings for the army, like ammo belt links for military use. They also specialized in stamping airbag and seat belt parts for the automotive industry.
Mauser supplied MFT with WW2 production drawings of the P08 magazine as well as HSc production drawings to help them develop the new magazines in the late 1960s. I have a set of WW2 Mauser HSc drawings here that came from the MFT archives.
MFT filed for bankruptcy in 2009. A new company was founded at the same address called Allpress Metals B.V., who still do metal stampings for the automotive world (seatbelt parts and airbag parts).
Some examples of the MFT 'Mauser' and 'Made in Holland' magazines, along with 2 unfinished magazine tubes:
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From a February, 1972 brochure:
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