Sounds like yours had a similar failure to mine which is at Ruger right now. On mine, which locked up while dry firing, there is a stud that is part of or attached to the trigger assembly that holds the bottom of the transfer bar. This allows the transfer bar to rotate on the stud and move up as the trigger is pulled. This small stud sheared off. It will be interesting to see how Ruger handles these issues as it doesn't appear to be a random failure. Will this be recall #1 for the LCR? If so I will be batting 3 for 3 with my new model Vaquero recalled (returned twice), my LCP recalled and finally this failure. Not your father's Ruger anymore.
In thinking about how this might occur, if the firing pin doesn't retract properly, pressure on the bottom of the firing pin from the transfer bar catching on it could shear off this stud. This might explain why you needed the firing pin work as well as transfer bar and trigger assembly.
Wife and I hit the range today with our 2 new LCR's, 50 rds each, so far no problems. Bought a new
Blackhawk .357 and shot it today as well, like it a bunch. 180 gr on top of some 2400 and a big Mulie, hope they meet up this fall.
Endurance run, 5000 rounds.
Gun is cleaned every thousand rounds. That includes three drops of oil on the hammer pivot pin, as the manual recommends.
I also run two wet patches down the bore & through the chambers, followed by a dry one. Swab the inside of the cylinder window including the breechface. Clean under the extractor star, drop of oil in the ejector shaft at both ends, drop of oil on the bolt (or cylinder latch, as Ruger calls it).
After the first two sessions, it's been 500-round sessions. Load & fire, load & fire. Natural breaks like opening another box, canteen break, granola bar break. Not deliberately letting anything cool down.
Running 500 rounds in roughly 60-70 minutes.
Accuracy tested with several different rounds before starting the 5000, same will be done again at the end if the gun holds up. Bulk of the test is straight into the ground. Rest will be exploring off-hand handling and performance on silhouettes at a couple distances.
Various measurements taken "before", same will be taken "after".
As you might of seen on another post I own a new unfired LCR. I hope the issues with the LCR are isolated. I do have a personal rule that if a gun fails for an issue that I cant be blamed for she goes. Period.
While I can't expect the LCR to be infallible, I do hope it is as rugged as the S&W I almost bought.
Here's to Ruger!
My only other Ruger is a 10/22 which has never failed me.