As of today the fastest gun would be thy gatling gun but it needs to charge up.
I think the best gun in crossfire is the m4a1 costom
UZI
That is 100% based on who's using it
Crossfire/Strikefire
the winchester or deaglr camo
A spring gun? It depends on how fast you can cock the gun. There is not a fastest gun.
The duration of The Fastest Gun Alive is 1.48 hours.
The Fastest Gun Alive was created on 1956-04-12.
Gatling gun
Possibly Howard Darby, who holds the FGA title (Fastest Gun Alive) See the link below.
The nerf magstrike can short all 10 darte in 1 second, that makes it the fastest.
The Gatling gun.