What I have read that the factory sights aren't the best. Is this set up good for my new Marlin, XS ML-0013-5 Ghost Ring rear with front sight. I seen one on Ebay for $82.95. Need info on where else I could buy this set up. Also I think I seen some where that someone makes a blank to fill in the factory rear sight dove tail. Any info would appreciated. I haven't shot it yet, I did cast up some 350gr gc and 405gr gc. to try.