[JudgemAll]

Whats with all the M-16's jamming?

It depends on the ammo. The 223 is a bit small to actuate the AR15/M16. You need match ammo with good brass, higher powder loads, I think, if not the autoloading action wont work well. The 7.62 is so big, that is not a problem, apparently.

[BBell]

And you need to clean it now and again.