Recently Blugarian 5.56mm mags have entered the country, and are being modified for fit in Valmet rifles. Tony from Tromix sent me two mags that worked quite nicely. A small minor bug was found and has been corrected. The mags are TOP Quality. I have at least ten of the Bulgy mags, and can say they will take a licking and still keep ticking without reservation.
Price is very reasonable.
For complete info contact Tromix . During the past year Tromix made available a number of mags that fit and feed better than the factory original Valmet magazines. Tony is busy making more of these excellent mags. The mags are made from the excellent East German STG mag. After the modifications are made, a teflon based finish is applied, making feeding and corrosion resistance top notch.