Fits current and older Crosman models 1377C, 1322C, PC77, P1377, P1322, 2289G Backpacker, 2240, 2250, 2300T, 2300S, 2300KT, 2400KT, 1300KT, SSP250 and may fit other models that use the same type of trigger frame. Does not work with the simulated two-stage trigger groups Crosman uses for Marauder Pistol, 1720T, 1701P, etc.
The MAGNUM PISTOL TRIGGER is machined from 7075-T6 aluminum, one of the strongest of all commercial aluminum alloys, stronger than many types of mild steel and stainless steels only much lighter. It's ultra-thin, extra-wide, extremely comfortable, smooth working, reduces pull about 4 oz and improves accuracy. It fits perfectly to eliminate unnecessary wobble, no shims or spring washers are necessary. A slight amount of clearance is necessary for light and ultra-light trigger springs to work correctly, it needs to be just loose enough to move with no resistance and not bind if you hold the grips tight. The thin trigger blade leaves a lot more room inside the trigger guard which greatly improves comfort, especially for adult sized fingers. Unnecessary forward movement of the trigger is completely eliminated by the trigger design. No other trigger in the industry comes even close to this level of comfort and performance. It's extremely durable and will easily last the life of your gun. There has to be a tiny bit of play to keep the trigger from binding, especially if you have a current trigger frame with the plastic cover. There's also some variance from one gun to the next in how it will fit, on average there's only about .002" of play which is about as perfect as you can get without being too tight.
The MAGNUM SEAR is made of 410 stainless steel which is one of the strongest and hardest stainless alloys. It's extremely durable, will wear and function better than a standard sear and the machining and fit are far better than others on the market. It's wider than standard to eliminate unnecessary wobble. Just like the custom trigger no shims or spring washers are needed, this part leaves only enough clearance to work smoothly and allow the striker to seat properly. It produces a lighter, smoother trigger pull and a cleaner release of the hammer.
The CUSTOM SAFETY is machined from 7075-T6 aluminum. It's dimensions are slightly different to fit and function better than the original plastic safety for Crosman pistols. In some cases you may need to remove burrs or excess paint from inside the hole in the trigger frame, otherwise it may fit too tight to engage with the trigger. A 2" square of 300-600 grit wet/dry sandpaper can be rolled into a small tube to use as a deburring/reaming tool, it can be inserted into the hole and twisted to remove excess material. Don't clean it out too much or it will fit loose, you generally don't want to remove all of the paint, just the high-spots. This should be done with all parts removed from the frame which should be cleaned thoroughly before assembly.
The UPGRADE TRIGGER / SEAR PINS are made of hardened alloy steel. They are much smoother, harder and more durable than standard pins. They are also a full .125" diameter (Crosman's are .124") so they fit tighter reducing unnecessary wobble.