Uses our traditional fiber optic technology. CNC-machined steel construction. * Contrasting red front and green rear. Concealed fiber cannot be seen by target. * Fits standard holsters. Snag-resistant design. * Fits the following models: Glock 17/17L, 19, 22, 23, 24, 26, 27, 33, 34, 35, 38 & 39