There is no specific "m16" paintball gun. there are several companies that sell paintball guns with m16 rails and shrouds. besides this, the barrel and quality of paint are in general what makes a gun accurate.
All paintball gun shoot around the same distance. which is about 100 yards at a 45 degree angle, but around 50 when actually shooting.
Depends on the gun. A muzzle loading musket- 30 seconds. M16, about 1/2 second.
The M16 and the M4 are the US designations for the AR-15 pattern of rifles.
The US military's primary infantry weapon for training is the M16. Just remember that when you enter bootcamp that you dont call the M16 your "gun".. The M16 is your "weapon"
Gun shop, gun show
The armalite gun company
This gun isn't even manufactured anymore, so they will be hard to find. The MSRP was over 500 and without electronics or a cyclone feed, it is basically a tippmann 98 with a buttstock and some milsim looking things on it. If you want an M4/M16 looking marker, there are many better looking cheaper alternatives.