AmeriGlo brings a clear advantage to your shooting experience on and off the range. The Ghost Ring Sight is the preferred sight for shooters seeking an alternative to traditional post and notch sight design. It utilizes an aperture style rear sight with two tritium mini-dots and a bright tritium front sight providing quick front sight acquisition. This model has a black finish and is compatible with Glock 17/19/22/23/24/26/27/33/34/35/37/38/39 Gen1-4.