Hey,
Yeah well, there were some different sights. The first ones are metal. Later on half round plastic en flat plastic sights. The same as some other rifles and pistols as well.
Metal first; http://img.photobucket.com/albums/v7...a/50a_rst2.jpg
Metal first; (sorry no foto right know)
Metal Later; http://static.mijnwebwinkel.nl/winke...s/modell50.jpg
Flat; http://www.metura.nl/a-23676782/mode...unststof-plat/
Half round; http://www.metura.nl/a-23674602/mode...a-35-halfrond/
Cheers,
Teun