the m16 uses 5.56 caliber ammo
46x53 nado
5.56
Sasme as the M16. 5.56x45mm
The M16 is only a 3round burst so you cannot change it.
Most airsoft battles take place in close quarters which is what the m4 was made for. Unlike the m16 which was made for longer ranges
It is an M16 with a 203 grenade launcher attached to it.
A M16 cost about $2000.00
Regular .68 caliber paintballs, all standard guns do. Also there is no "m16 paintball gun" , only guns that look like it.
amo
M16
The M16 was invented @ 1960