This video is a great intro to printers. Min 3 to min 8 is important.
https://www.youtube.com/watch?v=rkw4cVZ1A5Q
Resin Vs Filament is the 1st and most important choice.
If you are interested in 3d printing firearms, I can only say that the fellas that I see do that, use filament, I think it is stronger, but don't know.
I don't own a printer, and never used one, just enjoy watching content from those that do use them, so don't take my advise as gospel.
Resin is a lot messier, and requires more equipment to finish/wash a print (isopropyl, buckets/tubs, respirator, gloves, brush, possibly a curing chamber) but it gives a much higher quality print.
its a much harder process to deal with for a beginner, who is likely to have a ton of failed prints.
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