Trijicon Bright & Tough Green Front & Green Rear Night Sight Set - Colt Govt Older. The professional gun smith must use the available special Trijicon staking tool. This staking tool will fit both .125 and .055 tangwidths. Other staking tools will destroy these blades and can not be used. The .125 tang width blade can be modified by a local gun smith to .085 to fit a Springfield 1911 but other .45 brands don't fit these blades. The Gold Cup set is a complete new adjustable sight base assembly with sapphire dots. The Gold Cup set also fits the Python and other Colt revolvers with adjustable rear blades. Bars instead of dots can be used on the revolver adjustable blades. The posts are interchangeable between rifles. An A2 post will fit on an A1 rifle. Trijicon offers a choice of illuminated dot colors to suit individual shooter preferences. Trijicon Night Sights are available with green yellow and orange aiming dots. Trijicon recommends green dots because they are the brightest lamps. They are best for targets in low- and no-light shooting conditions. However because some shooters prefer greater distinction between their front and rear sights Trijicon also offers yellow and orange dots for rear sights. Trijicon recommends yellow over orange for the rear dots because yellow is brighter lasts longer and therefore carries a longer warranty. Trijicon Colt Govt. 3 Dot Night Sight Set .055 Narrow Tang are designed and assembled with the optimum combination of strength and safety. The patented aluminum cylinder and sapphire lens construction cannot be equaled. The brightness obtained from the tritium content is focused through the sapphire lens to give the maximum possible illumination. Because the sight blades are machined from steel rather than cast their strength is unsurpassed. Trijicon night sights are the brightest strongest and safest. This page represents following trijicon sets: Trijicon CA02 Green Front & Green Rear Night Sight Set Trijicon CA02O Green Front & Orange Rear Night Sight Set Trijicon CA02Y Green Front & Yellow Rear Night Sight Set Trijicon CA02 Night Sight Sets fits Colt Govt. 1911 Combat Elite and Delta Elite models made in 1988 or before (.055 Narrow Tang). Other Trijicon Colt Night Sight Sets are also available: Trijicon CA01 fit Colt Govt. 1911 Combat Elite Delta Elite models made after 1988 (.125 Tang). Also fits Para Ordnance P10 and P14 with stake-in front (excluding the Limited versions). Trijicon CA10 fits fits the Colt Combat Commander and stake-in front Para Ordnance P13 (excluding Limited version). Trijicon CA16 fits the Colt Gold Cup (National Match .45). Trijicon CA09 fits the Colt Officers (Colt Officers Officers ACP Compact 1991A1 (.45) and Para Ordnance P12 with stake-in front /excluding the Limited version/). Trijicon CP25 can be found at: www.opticsplanet.com/trijicon-night-sight-sets-for-ar15-m16-cp25.html Specifications for Trijicon Bright & Tough Night Sights for Colt Government CA02: Manufacturer: Trijicon Gun Make: Colt Gun Model: Colt Delta Elite Colt 1911 Government 1911 Colt 1911 Elite Commander Color: Black Green/Green Front Sight Color: Green w/White Outline Rear Sight Color: Green w/White Outline Fabric/Material: Metal Front Material: Tritium/Paint Gun Type: Pistol Attachment Type: Professional installation recommended. Front Blade Height: 0.185 in Rear Blade Height: 0.195 in Illumination Type: Tritium Additional Features: narrow staking tang .055 fits Colt models made in 1988 or before Condition: New Features of Trijicon Bright & Tough Night Sights for Colt Government CA02: Instantly visible sight picture in no-light or low-light situations: Tritium phosphor-filled glass lamp provides battery-free glow allowing for a visible sight picture in all lighting situations. Increased daylight dot visibility: White-painted rings around tritium lamps enhance user's ability to see sight picture in bright-light shooting situations. Enhanced protection from heavy recoil and harsh cleaning solvents: Tritium gas lamps are contained within protective aluminum cylinders and have additional silicone rubber cushioning. Evenly distributed light from tritium lamps: Each Trijicon tritium lamp is capped with a sapphire jewel that helps evenly distribute the light from the lamp and also acts as an additional layer of protection from puncture and cleaning solvents. Package Contents: Trijicon Bright & Tough Night Sight Sets for Colt CA02 Trijicon Green Front & Green Rear Night Sight Set - Colt Govt Older