my check went out yesterday for several of the lo-pro
one  will go into  the  BC  i have
another  into a 44 mag i have had for years
i think  i want mine in the rear hole
any reason you located it in the second hole?
i like the simplicity of it  and the price is a good point 
 compared to other sights........might as well go to a scope  for the cost of some sights