Kensight GI Series OEM Height Staked Patridge Tritium Pistol Night Sight Colt M1911-A1 80 Tenon Front Black. This sight is what is called a patridge style blade. It is ideal for target shooting because the rear of the blade is completely vertical. With the addition of a serrated blade this gives the shooter a better sight picture because there is virtually no glare from the sun as well as a good contrast between it and the rear sight. At just .150'' tall this sight was made to pair with Kensightitem 860-202 but will work well with any standard fixed MIL-SPEC .330'' wide x .115'' deep rear sight. The blade dimensions are .150'' tall x .118'' wide and has a .125'' tenon to fit a '80 Series Colt. The Green tritium insert is made and installed by Cammenga is .077'' in diameter and has a bright white outline made of PVC. TECHNICAL INFORMATION: General: Wire EDM Precision Machined Material: Sight made of 4140 Chrome Moly Steel and tritium made of MB Microtec (Switzerland) and supplied by Cammenga Corp Blade Dimensions: .150'' tall x .118'' wide (height to pair with a MIL-SPEC rear dovetail on a full size 1911 with a 5'' barrel) Tritium Dimensions: .077'' in diameter with a .015'' thick white outline Front Sight Fits: Colt Series 70 1911A1 with a .056'' stake-in hole BE CAREFUL ON THE INSTALL The tritium tube inside of the sight IS GLASS and it can break. BEFORE INSTALLATION - Inspect sight(s) immediately to verify that the tritium lamp is functioning. Any warranty claims for broken or dim tritium lamp(s) must be made prior to installation on your firearm. We will not be held responsible for breakage of tritium lamp(s) during the installation process. If you feel that the tritium lamp(s) in your sight is dim or non-functional in any way you must contactcustomer service department for warranty exchange or replacement before you attempt to install the sight otherwise the warranty will be denied. No exceptions. Authentic Kensight Sights - The Professional's Choice This is an authentic Kensight sight and not to be confused with other brands. When it comes to durability and features the Kensight sights far exceedcompetitors.sights are Wire-EDM machined from a single billet of 4140 chrome-moly steel. The result is a precision sight built with better materials and the Wire-EDM construction ensures the tightest tolerances possible. This translates to ultra-smooth adjustments audible clicks for both windage and elevation and consistent dovetail dimensions in which the ''industry standard'' CNC construction cannot compete. Backed by Limited Lifetime Warranty Kensight 1911 sights are premium quality and the first choice for factory-fit OEM manufactures competition shooters and professional's worldwide. Specifications for Kensight GI Series 80 Tenon OEM Height Staked Patridge Tritium Pistol Night Sight: Manufacturer: Kensight Gun Make: 1911 Platform Gun Model: 1911 Color: Black Front Sight Color: Green Sight Style: OEM Height Fabric/Material: 4140 Chrome Moly Steel Gun Type: Pistol Illumination Type: Tritium Package Contents: Kensight GI Series 80 Tenon OEM Height Staked Patridge Tritium Pistol Night Sight Kensight 870112: GI Series OEM Height Staked Patridge Tritium Pistol Night Sight Colt M1911-A1 80 Tenon Front Black