And then there's this option:
Globatrac's $49.99 Trakdot is like a cheap LoJack for your luggage
http://www.theverge.com/2013/1/6/3844284/globatrac-trackdot-luggage-tracker
Yes! Bad ass - thank you for sharing the info. They are $10 more now @ $59.99, with activation and flat rate shipping still under a single $100 bill / fiat coupon for tank of gas. Should fit in either pistol or rifle case fairly innocuously which is better than those that go on outside handle that can be cut off and tossed or sent on wild goose chase. With the trackdot app will know when it pops out onto the carousel instead of wondering, or if bag even made to the right destination. Mahalo!
ps. other poster wondered and I believe both agents and TSA are prohibited from handling your firearms! You are the only one that should be locking the case too, and they do not get to have the key(s) either. They do not have to be TSA locks but you will be advised if they need to open the case and you are not available those locks will be cut. In almost 10 years of flying I've not had a lock cut yet YMMV.
I flew a couple days ago the counter agent was more adamant about telling me I'd be responsible for any discharge of the weapon - like it would be loaded to begin with, duh. But was a new part of the spiel I guess to absolve the airline from liability since they couldn't possibly do a check. Sometimes you will be escorted to the TSA station for the bag check, other times the baggage will just be loaded onto the carousel and you go off to the security line. Either way I found if you notify the greeter at the line entrance you have firearms to declare you go right to the front (if you not already part of a premier affinity group which is a great deal if you fly frequently IMO).
All my luggage was opened en route, not really unusual, with the TSA white card inside to indicate the search errr, examination. But they didn't put my favorite OD cargo pants back in either those fuggers. At least my knives made it w/o being lost/stolen. Avoided the backscatter rapemachine on returning leg using an employee check point, as directed by staff so that was cool.