Hi my name is Max and live in northern Ab so basically I grew up hunting and fishing. Unfortunately not much experience on computers.I know there are lots of people out there that have knowledge that I could use in my latest endeavor. I have purchased a Model 1871 Buffalo Classic in 45'70.It shoos well enough the only problem is that the sights that it comes with are only good to 100yds I have been looking for tall tang or vernier sight that will fit this model and prefer to deal with a Canadian retailer. If there is anyone that can help me with this problem I sure would appreciate the advice. Max.