Lasersight flickering

Good day! I'm working on a Weapon system, which consists of 4 scripts, which can create almost any conventional weapon (melee or ranged - will be available at the Asset Store). Right now I'm working on Laser Sight part: an option to create a GameObject (here: a test sphere, representing the laser pointer), which is always kept at the RaycastHit.point position in front of the weapon. Easy-peasy.

The problem is - any update of it's position creates very ugly stuttering of the laser pointer. Here's the code in Update Function:

     if(UseProjectedCrosshair)
     {
         var CrossHit : RaycastHit;
         if(Physics.Raycast(CrosshairOrigin.position, CrosshairOrigin.forward, CrossHit, ProjectionRange, CrossHitAgainst))
         {
             if(CrossHit != null)
             {
             ProjectedCrosshair.gameObject.SetActive(true);
             ProjectedCrosshair.transform.position = CrossHit.point - (CrosshairOrigin.forward * CrosshairPull);
             ProjectedCrosshair.transform.LookAt(CrosshairOrigin.transform);
             }
             if(CrossHit == null)
             {
             ProjectedCrosshair.gameObject.SetActive(false);
             }
         }
     }

(CrosshairPull pulls it up a bit so it won't clip through walls).

Ideas?

PS: Additional and optional question: is there a way to contact the author of this here popular and awesome script: http://wiki.unity3d.com/index.php?title=DontGoThroughThings about it's licence and commercial permisions? It's not a must right now, just asking by the way. ;)