Your question intrigued me so much that I got out of bed at 1:00 a.m. and went down to my gun room to see. Not only is it cut for a stop, it has a stop. You can see the stop protruding ever so slightly in this photo of my three 686-3s.



What do you think? It doesn't make sense to me that Smith & Wesson would make a twin to an older gun or a 1 of 500 piece without marking it accordingly like my National Match in that photo.

Ed