Searching for brand-name MR14 bulbs at affordable prices? Your search ends here. On this page, our lighting supply team here at BulbAmerica has inventoried all of our available MR14 light bulbs and made them easy to view and order for you, our valued customer. Multifaceted reflector light bulbs (or MR light bulbs, for short) are specialized light bulbs that utilize built-in reflectors to produce precise directional light beams. They are thus ideal for applications where directed light is of the utmost importance, such as projection and safety lighting.