This particular rights violation session wasn't as bad as some. As Barb said, "They were pretty good about guns here. Much better than Denver." I can't find where I wrote up my Denver experience but here is someone else's experience. I have to agree but it's still aggravating to be searched by government agents without a warrant or probable cause.
As I was researching this post I reviewed the TSA website again. I may have gotten lucky when TSA let me get through with three of my STI magazines in carry-on baggage. They saw them in the x-ray and pulled the bag off for further inspection while a police officer watched. They examined each of the magazines for ammunition, asked if I was law enforcement, and told me to have a nice trip.
The TSA says this about firearms parts:
You may only transport firearms, ammunition and firearm parts in your checked baggage. Firearms, ammunition and firearm parts are prohibited from carry-on baggage.
I guess it depends on what you define a firearm part to be.