Which was why it was replaced. But speaking of heavy and clumsy, there's at least one early photo of an ARVN soldier, weighing not much over 100lbs it appeared, shouldering a M1 rifle; an M1 or M2 carbine would seem a better choice for jungle fighting before M16s became available. Another photo shows what I think was supposed to be a VC aiming an '03 Springfield, and I don't mean 03A3! One problem with most historical documentaries is that they mix up photos taken in different decades because the photo editors are too ignorant to know better; what they could at least do is insert an approximate date into the corner of every photo or film clip.