The top one is a 686-4 I found in a pawn shop and passed the tests in the sticky here with flying colors. Actually, it does slightly better in these tests versus the 686-6 SSR pictured below it. I got rid of an XDM 9mm that I, and most people I shoot with just couldn't get along with and bought the SSR used at a gun store. I shot some hot loads in the SSR and it was to the point of painful. 125gr XTP-HP @ 1470 over my chronograph. I have yet to shoot the 686-4 and was happy to find a 686 w/o the lock. Locks don't stop me, but I prefer them not to be there. I managed to get my 442 w/o lock as well. Does anyone advocate full moons? I like the idea and the HKS speedloaders I have seem clunky. If so, who should perform the work?