I just received the TNW Aero Survival Rifle today that I ordered last week. Currently TNW has only 3 dealers listed on their website (none in TN). If you haven't seen these yet, they are pretty cool. The rifle is offered in 9mm, .40sw and .45 ACP. TNW will offer caliber exchange kits soon on their website along with a .22LR kit this summer--an exchange kit is a barrel and bolt. It uses AR grips and stock bodies, so you can customize if you like. It takes Glock magazines. I bought the .40sw version, since I am a fan of the round, and I have a whole platform of Glock .40sw magazines available to use in it. I was able to fit mags from my G22, G23 and G27 in the ASR. TNW also includes an NC Star 4x30 scope and high-mount rings as part of the package... not my first choice for a scope, but it's there to play with or use as a back-up - current MSRP is $575. I went with the standard matte black rifle, but they have two other offerings with nlime green or pink "tiger stripes", if that floats your boat.
The rifle has toolless takedown capability and will easily drop into a backpack. The barrel is indexed, so assembly is very easy. The company plans to market some 3-day packs in the future that will have compartments made for the rifle and spare kits. I got a chance to run a few rounds through it and I am impressed. I haven't had the chance to put a scope on yet and sight in, but I am stoked to get out and play with this rifle some more.
Here is a product demo video. As you watch this, see if you can count how many times you hear the TNW rep say "You are correct."
http://www.youtube.com/watch?v=GzLnymcE9Fo