a TSA lock has their logo on it, and usually has a second key hole so the guards can open your bag for inspection. You can find them at walmart in the section where they sell locks or luggage. http://www.rei.com/product/714382?pr...:referralID=NA its that little red diamond you are looking for. the packaging is usually VERY clearly marked... If you dont have that kind of lock on your checked bag, expect it to get cut off...

As far as the soft side bag, most suitcases are soft (fabric) sided and as long as the pistol case is hard sided, and is inside there, you are good to go.

No paperwork to fill out on your end, they may have you sign something agreeing to their policy, but literally, the bag only took maybe an extra 30-45 seconds to check than if I had not had a gun with me.

So again. Hardsided pistol case with standard keyed masterlock(only you can open this one!!!) Pistol unloaded, Ammo in original box in case /w pistol. Hardsided case inside your suitcase on top. Suitcase locked /w TSA lock. Tell the clerk you have a firearm to declare in your checked luggage, she will have you sign a red or orange tag agreeing to their policy and stating it is unloaded and packed properly, you will stick that tag either in the pistol case, or on top of the pistol case, depending on their instruction. And then keep your ears open for a page if they want you to open up the pistol case. I wouldnt worry too much about it. Ive only done it one time, and was nervous about taking a gun in a freaking airport, but it ended up being no big deal at all!