the Comfort Tech System is noting more than marketing BS. There is absolutely no difference in recoil between the black fake Kevlar and walnut. I've shot both on numerous occasions...
I do too but the 391 has been on the market much longer. I am seeing more and more A400 Sporting model (not hard to miss with the blue receiver) so am not ready to declare the A400 a flop just yet.I still see a plethora of 391's compared to the new A400.