I have my Pro 60 on order now. Bought it sight unseen. I have 5 other S&W revolvers, but none of them have that two piece barrel system that this one has. Didn't know it when I put it on order. Should I be concerned about this different or cheaper way of the barrel system? Also, I called S&W about any trigger work to this gun. They said all Pro series and performance center guns have some sort of trigger work. They said this has (I can be wrong with name part) a comb spring.