As Eskopdl says:"A great machine" I have had hours and hours of fun inside a Magnum's guts so I can confirm. A word of advise though check the spindle motor for signs of tampering, a burnt smell for instance, very important is the condition of the spinner and it's mirror, look if the mirror has any dark spots they would imply that the mirror is going blind. Gently, oh ever so gently remove the fiber-optic cable attached to the optic house and peek inside at the iris if it looks snarled then forget it, you will never get a decent dot. As for the laser, replacement lasers of the specs you need are pretty easy to get hold of on the other hand the installation and alignment is not for the faint of heart or weak of wallet.
If the device is clean, not a lot of dust inside and has a good mirror, the Iris in order then you have a CTF that will be a work horse for years to come.
