The IMBEL IA2, the new service rifle of the Brazilian Army, is the answer to the question “What would a modern 5.56mm FN FAL look like”. It has a scaled down and lighter receiver to suit the 5.56mm cartridge and AR-15 magazine. An AR-15-style (Stoner) rotating bolt replaces the old fashioned tilting bolt/breech block of the original FN FAL. The above photo of the rifle disassembled was posted on the DefesaBrasil forum.
Being an FN FAL fanboy (‘The Right arm of the Free World!’) would love to shoot this rifle.
Many thanks to Victor for the link.