A simple rule of thumb for adjusting the front sight is that you always adjust INTO the error, not in the opposite direction. If it shoots high, you need a higher front sight. If it shoots low, you need a lower front sight. I filed a nos replacement on an original Quality Hardware with flip sight several years ago. Someone had cut off the sight "wing" protectors so it needed replacing. I took another Inland i have that's perfect and checked POA at 25 yards, then carefully filed the front sight on the Quality Hardware until it was shooting to the exact same point. It's now perfect. Always use the ammo the weapon was designed for to make these alterations if necessary. That holds true for ALL military rifles.