If you comply with the FAA's rules, you can transport firearms in checked baggage, at least within the US.
My memory of the rules:
>> There are TSA-approved locks, which have an override that only TSA is supposed to have. So, you can put that lock on the outside of the bag.
HA HA HA!
Yes, there are. Have you ever seen or used them? They are the cheesiest pieces o’ s___ you’ll ever see.
And, anyway, in a situation where you have lazy TSA who don’t feel like hunting around for the key, they just CUT THEM OFF anyway.
“TSA APproved” locks are WORTHLESS. Yet another abuse perpetrated on law abiding citizens by our arrogant Homeland Security agency.