The M16 assault rifle was originally issued with STANAG magazines with a 20-round capacity. However, a 30-roundmagazine has now become the norm. 100-round Beta C-Mags are also available. But of course, only one round can be chambered at a time.
Lots.
46x53 nado
The M16 rifle typically has a standard magazine that holds 30 rounds of 5.56x45mm NATO ammunition. However, there are also variations with different magazine capacities available, such as 20-round magazines. The number of bullets can vary depending on the specific model and configuration, but the 30-round magazine is the most common.
any Nerf manufactured bullets will fit.
There are 20 and 30 round magazines. some even 10 rounds There is also a "BETA Mag" that holds 100 rounds. It uses to drums of ammo that attach underneath it. They are heavy and only used for mounted m16's or over watch duty.
An M16 is an Assault Rifle used by the military. I somehow doubt that a 10 year old would fit inside of one.
No
In the 1960's there was the Gyrojet gun which were actually miniature rockets but the caliber was larger than the .223 round of the M16
7.65 would be ideal
Clip system darts
You can put 5 shells into the magazine of a 30-30 Winchester rifle and one into the chamber.
No. M16/M4/STANAG 4179 magazines are much more compact than AK mags.