Having full auto in an M-16 is useful for about 5 seconds then the magazine is empty. You then have to reload. Considering I never want to carry 1000+ rounds in mags for my rifle, and I don't have the tigger control to consistantly get the burst legnth I want with a service rifle M-16 i'm perfectly acceptable with the burst capability. The M-16 A2 was a 3 round burst rifle. M-16 a1 was full auto to fix your earlier assertation about Canadian firearms. The A-3 was also full auto. For the average troop I'd rather have a 3 round burst than full auto. Full auto belongs in squad automatic weapons and light machine guns on the platoon level it doesn't really belong in the main firearm of your average troop.