S&W also made an 8-shot PC 627 with a 5" slab-sided barrel that had the same frame shape and hammer gap. All with this configuration had a frame mounted firing pin. The frames were extended to cover the gap by the time the IL came out (about 2001). It's not an issue, it's just the way they made them.So it was just this version of the 627's? The Bloodwork model? I have a 627-5 but it's a 5" version with the lock and the frame mounted firing pin, sadly, but it's a nice gun nonetheless but it forsnt have this issue.