AmeriGlo brings a clear advantage to your shooting experience on and off the range. The AmeriGlo Spartan series is built upon the classic, 3-dot design, providing a variety of outline combinations designed for highly visible sight pictures in any lighting condition, including darkness. A green tritium lamp with a White, Orange or LumiGreen outline offers accuracy from the front sight, while two tritium lamps (with white or black outlines) offer precision from the rear sight. Built upon the classic 3-dot design, the Spartan sights feature a glare reducing rear tritium sight design and the popular orange outline tritium front sight, delivering a faster front sight acquisition. Does not fit Glock MOS slide.