Its not worth your health or well being to repair this and depend on it not to have a catastrophic failure. Unlikely, but there is the chance the frame could crack during firing that the slide could derail and come back at your face. I've had a FN49 detonate out of battery. Long background story on that one, but there's about three seconds of my life I can't account for due to being smacked by the concussion of an 8mm mauser round exploding near my head. Bottom line is that you're doing the right thing replacing it rather than patching it. Part it out but if you leave the damaged pistol in one piece, make sure you tag it that its unsafe to fire for whomever may find it perhaps after you pass on. Right now its like an old sea mine they find time to time bobbing in the ocean, might go off, might not.