Thanks Ikarus1. I took a ride over to the PSA store in Beaufort, SC and picked up a lower kit (minus the trigger and BCG). I only need a couple spring out of the kit and will put the extra parts in the parts bin. They did not have the individual springs. I believe you can never have enough springs and detents. I have never lost one, they are in the work shop somewhere.
Next time ordering from Brownell's, I will order a couple extra parts.
Thanks again!