Another peep sight option is to install one of the "No Drill" Pacific or Redfield target sights. These were very nice sights. You still find them occasionally on ebay or gunbroker. I paid about $100 for mine 5-6 years ago. The only modification to the rifle is removal of the cutoff. Make sure the sight you purchase comes with the longer side plat screw. If it doesn't you will have a hard time finding such a screw or will have to have one made.