SIG SAUER Dawson Fiber Optic Front Sight . Improper installation may result in malfunction serious injury or death. SIG SAUER requires that only certified SIG SAUER armorers install these parts kits. Any damage caused by the incorrect installation of these parts kits are not covered by your firearm's warranty and SIG SAUER will charge for any needed repairs to a firearm damaged by improper use or installation of these parts kits. This sight is much taller than the standard sights on our 1911's. Meant to be used with an adjustable rear not a fixed one. WARNING: These parts kits are intended to be installed as a full unit. Any substitution of included parts may be incompatible and may lead to malfunction serious injury or death. Specifications for SIG SAUER Dawson Fiber Optic Front Sight: Manufacturer: SIG SAUER Gun Model: 1911 Package Contents: SIG SAUER Dawson Fiber Optic Front Sight SIG SAUER Infinite Guarantee What firearm models does the manufacturer say SIG SAUER Dawson Fiber Optic Front Sight is compatible with? The manufacturer suggests that SIG SAUER Dawson Fiber Optic Front Sight is compatible with 1911SIG SAUER Dawson Fiber Optic Front Sight - 1911853-R