Staple guns are one of those things. Just don’t do it – you will spend over 45 minutes trying to get each tiny springy piece back in and still be frustrated and Home Depot is only 15 minutes away and there will be much less cursing.
There’s probably some metaphor or lesson to be learned here about broken things and things that can’t be fixed. In general I am very pro fixing things and enjoy trying to fix things, and sometimes this does end in frustration, but sometimes it ends up feeling very fancy and accomplished. I think I’ll take my chances on frustration.