First the GSG 1911, with a custom barrel bushing from EGW, is the single most underrated handgun in 22LR. So accurate I can shoot through the same hole at 17 yards, 51 ft, standing off hand, slow fire, and very reliable when kept well oiled. This Dawson Precision front sight is high quality carbon steel, CNC machined to exact tolerances. This is the best shooting accuracy I have had in 40 years with aging old eyes. I bought the 0.310 high 0.100 wide fiber optic front sight. Your GSG 1911 will shoot quite high with a custom barrel bushing for accuracy, so you will need a tall front sight. Thanks to Dawson Precision for the excellent quality sights at a reasonable price, and fast shipping. Please consider making an adjustable rear sight for windage AND elevation.