I have found a boresight laser is a good thing to have. Face it ammo ain't cheap these days and it prevents you from taking apart your rifle and looking down the bore. I use one on my Yugo SKS every time I put it back together as there are no factory rails on these rifles and my mount is on the rear cover. Try this one as it is inexpensive and fits in your rifle like a bullet. Face it you already spent enough on your scope.
http://www.gunstuff4you.com/product/59946