Nothing recent, but some years ago, I bought a new Colt Trooper MK III .357 mag revolver, and it started misfiring before it had 100 rounds through it. The transfer bar was falling before the hammer dropped.
Returned it to the Colt Service Center, and they promptly replaced the defective part and covered shipping both ways... no charge.
I also had a Thompson/Center Hawken .50 cal flintlock that had a frizzen that didn't spark well. I wrote them to inquire about buying a new part. They sent me a new frizzen free of charge, even though the rifle was probably 10 years old and had been shot quite a bit before the surface of the original frizzen became worn.
