Or as “checked baggage?

I’m just having paranoia about the delivery guy going “hmm cool, that’s for me!” Or some lengthy time in the room with the one way mirror with airport security. Insurance obviously, but I waited a long time for the one carbine to be completed and the other one is hard to replace now as well.

What shipper may you have you used?
Do you package it yourself so you are not draggin’ something into the UPS store that shouts “gun”?
Sharing your experience is appreciated!