Doug Turnbull Restorations manufactures reproduction front sights for early 1911 pistols, available in round and square styles.
The square notch blade front sight fits 1911 models including Government, Commander, and Officers, with specific dimensions of height .110 inches and width .050 inches.
These steel constructed front sights have a blued finish, with the square style being used on original Colt 1911 pistols with serial numbers ranging from 701,000 to 893,000.