Metal 3D Printing is becoming a great complement to Metal Injection Molding (MIM) and the decision to use one or the other largely comes down to the volumes required. The added bonus with metal 3D printing is that you can update a part without needing to invest in a brand new mold.
Manufacturers today who are searching for a cost-effective way to make small and complex metal parts for production by and large only have two options: metal injection molding (MIM) or investment casting. Casting has been around for thousands of years, and MIM was created ~40 years ago. Metal 3D printing is the new entrant to the scene, and for the first time in a long while adds another option to the engineer's toolkit. New low-cost, high volume metal 3D printing technologies (like 3DEO) are beginning to change conventional manufacturing wisdom.