Abstract: A parts feeder which incorporates a position-controlled conveyor, a unique flex crowder system and destacker for promoting the singulation of parts on the conveyor, and a vision enabled reject mechanism to select and reject non-compliant parts. In this regard, parts to be sorted are lifted onto a conveyor and run past a series of adjustable crowder sections, including a flex crowder section, past a destacker element and into a singulation zone whereupon multiple camera images of both edges and features in conjunction with conveyor speed, conveyor position and laser triggering synchronize the parts to be rejected. The parts feeder incorporates adjustable settings thereby obviating the need to switch out components for the purpose of accommodating parts of various shapes and sizes.