Freeform optics offer the next evolution in classical design by enabling asymmetric bending of surface shapes to enhance aberration correction. MIT-Lincoln Laboratory has been developing a unique method for design by natively optimizing these shapes as NURBS surfaces, treating them as variable point clouds rather than polynomial expansions. The flexibility of NURBS allows them to take on any shape, allowing a system to reach its best optimized state. Recently, Lincoln Lab has added capability for optimizing afocal systems, including prototyping a reflective, wide field of view 150mm aperture telescope with diffraction limited performance. In this presentation, we will show the process for working with NURBS raytracing, from concept through assembly, integration, & testing of a system and how it is adapted for focal and afocal systems.