Sell or keep?
If you had a 9mm steel-slide aluminum frame handgun that was
1) imported - so no spare firing pins/trigger springs available
2) has gone up in value so you could break even although its used
3) not your only 9mm service size handgun
Would you sell it and buy something with available spare parts?
Or would you keep it "just because" as a potential gift for relatives or a beater?
You see, I would just keep it as a beater but even then I'd prefer a beater with spare parts available. Believe me I have tried to locate spare parts and aside from a substitute mainspring from another handgun, there are none to be had.