Automated intercept turret - http://en.wikipedia.org/wiki/Trophy_(countermeasure)
Rockets – with this is depends on your distinction on Missile or Rocket (Smart or Dum pretty much)
A Missile has the potential to be guided, usually carrying a lower yield warhead or a explosive designed to exclusively be useful against armour.
A Rocket is usually unguided but carries a larger yield warhead.
The system I presume your talking about is the MARV (Multiple, Arial, Re-entry, Vehicle) Warheads used in ICBM’s. I suppose with GM’s permission a low yield cluster rocket could use the same kind of tech.. but I doubt it would be as effective as a larger yield weapon of the same type.
Armour-Piercing rifle: Armour piercing is really something to do with bullets and shells rather than the guns that fire them it all depends on what you want to be using them on. A lower calibre weapon such as a rifle (firing from 9mm up to the .50 calibre rounds) can be useful on humans up to light vehicles at their largest. Above that you are moving into the kind of weapons wielded by light and heavy armoured vehicles. My SIREN carries a 40mm Gatling gun (based on the 30mm GAU8, which is used for shredding tanks) and a 105mm (which in today’s society is used for blowing the crap out of about anything.. )
Automatic rapid-fire shotgun: Again depends on calibre (or Bore if you would prefer the correct term) best modern weapon for this role is the AA-12 http://en.wikipedia.org/wiki/Atchisson_Assault_Shotgun
Anti-electronics weapon of some sort: GM’s work.. EMP type bombs exist but are not widely used. But Directed EMP is a thing of science fiction.
Incendiary: Napalm is probably the “best” Incendiary I know (since it was the last one we really worked on before they were banned for combat use). Sticks like glue, Burns in water, and spreads fast.
Burst-fire armor-piercing rifle: see AP rifle up there.
my two penny's