The C7, made by Diemaco, is the Canadian Forces version of the M16. The C7 also has a fully automatic mode unlike the M16 which is limited to burst modes.
American Sargent "Switch to F/A boys! We're storming the building!"
American Troop "But Sarge, we don't have that mode anymore."
American Sargent "Well ya should have knocked out one of Canucks and taken their C7 eh?!"