yeh it is a colt ar-15 varient made specifically for the canadian military
alot of modern militarys use the 5.56 because it has lower recoil and is lighter weight
IMHO the FN Fal and the M14 are superior weapons when it comes to range and stopping power
but the lower recoil of the 5.56mm makes the follow up shots alot quicker even if it is a wimpier round