I was disappointed to discover a number of sharp burrs/casting defects that easily caught on slings during use. These were easy enough to resolve with a file, but I don't normally find myself taking a file to new carabiners. Also the lock does not have a limiter to stop over-tighening the lock, which seems to be almost universal on locking carabiners these days.
Hasn't broken yet :D
Good sterdy piece of kit, the cheapest yet the toughest