You could script it, or you could use the built in functions of 3DRad - namely the Event Timer ( http://3drad.com/EventTimer.php ) and the Projectile ( http://3drad.com/Projectile.php )

in the projectile HELP it states 2 key things you have to grasp...

1 - Projectile lifetime
Time, in seconds, after which a RigidBody bullet gets re-usable, after it has been shot.

2 - The shooting action is performed as soon as the Projectile object is started by another object (like EventOnInput) or by a Script.

so...

add a projectile... link it to a rb (or other physics thing you wanna move) and set it as the projectile...
set 5 in the lifetime property...
add a script object.. link it to the projectile...  one line in it that starts the projectile object...

void Main()
{
   iObjectStart(OBJ_0);
}

it's as simple as that... the thing will fire each time the lifetime is up...

--Mike

you're welcome... you could've figured that out yourself if you read the help files, and based on what you've read do a lil experimenting...

the help files have a lot of info about each of the objects...

good luck..

--Mike