It is a right hand world for left handed people. Most only think of cast at the face area but many guns do have some cast in the toe area. It help getting the toe into the proper shoulder area but on left handers it goes in the wrong direction. You might email several makers to see if they make any models without this and go from there. Measuring fine details is beyond most sellers, even those in the business and just about all private sellers. We wont get into the stupid or dishonest ones.