Gunsmithing is always a good trade. It may be slow right now getting started, but it'll start dominoing. If they outlaw guns at some point then your business will triple and so will your prices (sic). Not saying you should break any laws, I'm just sayin...
And with all the crap on the market nowadays you should have plenty of job security, lol.
"Always place your clothes and weapons where you can find them in the dark"
"Understand that the enemy is not the enemy in his own eyes ;this may offer you an opportunity to make him your friend. If not, you can kill him without hate, and quickly."