I do not have a good solution for AR-15 storage in my T4R other than my hard sided pelican case. But then again, I don't carry one around for protection either. You guys must live in some f'ed up areas to be carrying an AR15 around "just in case."

I would NOT trust a rifle that had been dropped from a helicopter or sat on. After all your life could depend on it and it doesn't take much force to mess it up no matter how good your mounts are.

I think that for some, sighting in a weapon is a religious thing. (I know, Don't laugh) People spend hours and hours getting it just right. Even gentle bouncing around under the seat could knock it out of adjustment.

Also keep in mind it's not just the physical mounts that can fail, holographic sights (EOTech) and even optical scopes like Leupold, Bushnell or Vortex are pretty fragile. A dead battery and my Eotech is useless.

Storing it under the seat might work if properly protected on all sides, but how the hell would you get it out in a hurry if your life depended on it?