First M27-bayonet were manufactured only by Fiskars. Later product improved bayonets (unofficial designation "M29") were manufactured by Fiskars and Hackman.
Early M27, manufactured only by Fiskars.
Late model m27 manufactured by Hackman.
Late model m27 manufactured by Fiskars.
Differences to early m27 can be seen in manufacturer label, guard and blade stem.
Fiskars M27 with rare Finnish Army stamp.