The front sight flew off my New Model Blackhawk 4 5/8 in 357 while I was firing it. The gun was purchased earlier this year and has about 250 rds through it. Ruger CS was very helpful and stood behind their product, they will be fixing for free including free shipping. My question is how does this happen. It appears to be silver solder and broke loose. Is it common. Do they have to reblue the gun to fix it. After it's reattached is it something I have to worry about. Love the gun and want to keep it.