Prior to the development of the CAL, FN had already constructed a scaled-down FAL prototype before shelving the idea as unmarketable. Noting the growing sales success of the cheaper and simpler HK G3 rifle, FN decided that for any future rifle to be competitive in the marketplace, it would need to use fewer expensive precision-machined parts. These would be replaced by less expensive castings and stampings where possible. While the construction of the new CAL reflected these design principles, it was still relatively expensive and complex, and met with no significant sales. It was eventually dropped for the even less expensive FN FNC. A small number of FN CALs were sold to the civilian market in the US.
en.wikipedia.org/wiki/FN_CAL
Don't try to recreate what you see in this video, as this is gameplay. This video was created using the game World of Guns:
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