Hunterwinco, That just depends, some have had to replace the front sight, there have been at least 2 different front sights used over the years. The newer sights use a 6x48 mounting screw, the older ones had a smaller screw. Best recommendation would be to try it and see. I installed a Williams Firesight on the 45-70, you can check out the peep sight sticky near the top of this forum for more info on the front sight.