Cant see how the SAR 21 can offer any significant
advantages over M 16. M 16 is still a
good rifle although it has been around for almost 40 years.
the article already stated the advantages over m-16
It has a smaller overall profile than the M-16, without
sacrificing barrel length - thus preserving accuracy at longer
ranges.
more manageable recoil, due in part to the weapon's center of
balance. The recoil tends to drive directly back against the firer,
instead of pushing the barrel upwards.
for urban warfare, where more compact weapons are better
in maneuvering indoors, and where close-range, fully-automatic
fire is more common.