I own a 1943 Lee Enfield Mk 4, which I plan to use for deer hunting in western PA. The factory sights come with a front site post that is zeroed for 300 yards with the larger fixed peep combat sights. Unfortunately, with the dense woods and hills in Western PA, the longest shot is 100yds and most shots are 50yds. I understand that after market front sights are available to bring the point of impact down. Does anyone know where to buy these?