The Optum takes the versatility and features shrewd scopes are known for to the next level. With more adjustability than any other scope in Shrewds line, the Optum packs all the features of the nomad platform into an efficient and easy to use package. The hassle of changing pin positions, installing a light kit, and swapping fiber is gone. The Optum series are the epitome of adjustable efficiency. Must purchase Optum Ring System, sold seperately.