I've had low back issues that are related to the piriformis muscle . Your issues may in fact be tied to concealed carry, though I would think it more likely if you carried behind the 3 o'clock position forcing your hip out of alignment when sitting. Mine was not related to concealed carry, I injured it at work. My point in responding is to point out that the back issues related to this muscle do not heal well on their own because of the amount of compensation done by other muscles and the way you walk. Once the piriformis is injured, you seem to enter a self perpetuating loop. The leg pain results from the irritated piriformis impacting nerves in the sacrum. There are stretches that focus on stretching the piriformis muscle. I found them on yahoo. If the stretch is different from one leg to the other, you are probably on the right track. Also look at stretches or joint manipulation of the SI joint. The SI joint was affected by my long term piriformis troubles. These stretches have almost eliminated what for me was several years of chronic back pain. At the rate my back is progressing, my pain is rare and hopefully soon gone. Best of luck to you.