These ejectors are an excellent way to upgrade your 1911 and improve its function. Ejectors need to be fitted to your gun by a qualified gunsmith.
Replacing an ejector on a 1911 is often a tricky business, and is not recommended for the home hobbyist. The traditional way of securing the ejector to the frame is with a crosspin, however some modern manufacturers of 1911 type guns do not use this method. They instead use a locking compound, like Locktite to secure the ejector to the frame. In these guns, there are no holes drilled in the frame to allow for the use of a crosspin. If there is no hole drilled in the frame of your 1911 in the slide rail of the frame just above the plunger tube, then your ejector is not "pinned" in place. The removal procedure for an ejector which is not pinned involves heating the frame in the area of the ejector mounting studs. Heating of a gun frame is an undertaking for only the experienced gunsmith. Over heating may cause changes in the structure of the metal, affecting integrity and possibly making the gun unsafe to use. If you are unsure of the method by which your ejector is held in place, consult a gunsmith
Another kink; even if you have a pinned ejector, the installation process is not as simple as it may seem. 1911 parts manufacturers do not typically drill the front mounting stud of ejectors, due to variance in mounting stud hole depth and cross pin location. To replace an ejector, you must drive the cross pin out, place the ejector in a soft-jawed vice, and pull on the frame until the ejector comes free. Attempting to "wiggle" the frame or pry on the ejector can result in the mounting studs breaking off in the holes, and then you have a real problem. Once the old ejector is out of the frame, the new one must be dressed to fit the frame for mounting stud depth and cross pin location. The cross pin hole which must be drilled in the mounting stud is not one that will pass through the studs center, but will be off-center and will form a "half-moon" shape in the stud. It is extremely difficult to drill a half-moon shape into the stud with a drill press, and impossible with a hand held drill. Attempting to drill the hole with the stud in the frame can cause the pin hole which passes through the frame to be damaged and could render the frame unusable. It is therefore not recommended to attempt any ejector removal or installation by people other than qualified gunsmiths. This information is not provided to disuade anyone from attempting to perform work on their gun, it is instead meant as a service to our customers so they can make an educated decision on what operations they can do at home, and which ones they can select parts for and take them to their local gunsmith for installation.