I’ve been wearing a GSAR daily for the past 8 years. Just had my original one “rebuilt” after being very damaged by one of our Patrol K9s on a training day. For less than it would have been to “repair” they just took off the back plate of my original one and threw it on a brand new case with a new movement with the updated face. The current movement is a few seconds fast a day, I’m sure it could be regulated but it’s fine for my usage. My original one lead a tough life...multiple fights, falls down cliffs / hills and thousands and thousands of rounds...great watches.
Original one
New one