Things You'll Need
Instructions
Disassemble your MAK-90 rifle. Place the barrel in a vise so the top of the sight is pointed upward; this allows free access to both sides of the sight. Pad the sides of the barrel so they are not damaged by the vise.
Cut a slot along the length of the sight -- parallel to the barrel -- with your cutting tool. The slot must be deep enough to almost contact the barrel. Cut a slot on the other side of the sight. Avoid contacting the barrel with your cutting tool.
Insert your chisel in the bottom half of a slot; strike it with your hammer to break off the bottom half. The sight will fall off the barrel once the slots pop open.
Remove the barrel from the vise.