Continuing our previous research to visually extract and visually and conceptually match weapons, this study develops
a method to determine whether a set of weapon parts visually extracted from images taken from different scenes can be
assembled as a firing weapon. This new approach identifies potential weapons in the ontology via tracing detected
necessary and sufficient parts through their meronymic relation to the whole weapon. A fast algorithm for identifying
potential weapons that can be assembled from a given set of detected parts is presented.