atlantis weapons

[hxclespaulplayer]

What are the following called?

from "the siege, part 2" (I know the orange ones are drones):

http://img169.imageshack.us/my.php?image=vlcsnap3048492xt0.png

"the siege, part 3" (not very clear in this pic but they come flying out of atlantis, everywhere):

http://img172.imageshack.us/my.php?image=vlcsnap3050361bi1.png

Also, What ep in season 5 are the Asgard plasma beam weapons used?

 

[T J]

That's the railguns

 

[MilleniumLance]

the prototypes had blue tracers

 

[Hermiod]

The weapons are, as previously mentioned, railguns designed for the Prometheus and the Daedalus as stated by Colonel Everett in "The Siege, Part Two".