The XS front sight fits all AK-47 and AKM varieties. It will not fit the SKS or the Czech Vz.58 rifle. The AK Tritium Front Stripe provides superior sight picture and quick acquisition that works in harmony with your eye's physiology in a fight or in the field. XS Sights builds purpose-driven sights for easy visibility under stress and poor lighting conditions, decreasing the time it takes to find the front sight and make a reliable shot. Gunfights don't happen in perfect light or complete darkness. They happen in between these two broad spectrums. Night sights don't just need to glow in the dark, they need to be visible at all times.