Pre-war magna's sometimes turn up on flea-bay. I picked these up about 5 years ago fairly cheaply. They have no sn stamping; probably a post-war, after-market add-on. Their condition matches my shooter-grade k22/40, so they weren't too expensive (~$125). They're a little thicker than pre-war non-magnas and/or post-war magna's, so plan on adding a post-war target grip screw if you find some without. -S2