Featuring glowing tritium-filled lamps for a distinctive shooting picture in any light, TriLux H3 Bright & Tough Night Sights bring the advantages of self-illuminating technology to sidearm users. The three-dot iron sights for Steyr-Mannlicher M-A1 by TriLux H3 increase night-fire shooting accuracy by as much as five times over conventional sights - with the same speed as instinctive shooting - and without the need for batteries. In addition, these TriLux H3 Night Sights feature a white ring around the glowing dots for unsurpassed daylight visibility. Highly effective in close-quarters, TriLux H3 Night Sights are widely used in military applications, home defense, as well as standard issue with hundreds of police departments and federal agencies. Installation by a professional gunsmith is required to obtain the 12-year warranty against lamp failure. Available TriLux H3 ST01 Night Sights for the Steyr Mannlicher MA1 Pistol: TriLux H3 ST01 Steyr-Mannlicher M-A1 3Dot green front & rear night sight set TriLux H3 ST01O Steyr-Mannlicher M-A1 3-Dot green front & orange rear night sight set TriLux H3 ST01Y Steyr-Mannlicher M-A1 3 Dot green front & yellow rear night sight set