Quoted from rancegt:I'd be surprised if this is true. The coil plunger doesn't have to be that precise and I'd be surprised if it's not rolled. I doubt the plunger ever touches a mill of any kind.
You are correct, it is not machined. In making the comment about how stupid we are he showed his true colors and was not even correct with the statement. Troll?-No, stupid troll-Yes.
EDIT: I just looked at Chas010 history, not a troll, just acting like a jerk in this thread.