Detail strip is pretty easy for the 75. After you remove the side assembly remove the gips. After the grips are off you will see the magazine tension spring in the back of the mag well(big flat spring behind mag). Remove the top pin from the spring you need to remove the spring to remove the main spring cap(hammer spring retaining cap). When the tension spring is free on top push in on the main spring cap and remove the pin, before you try to remove the cap pull the tension spring up and out of the cap(there is a relief for it) the cap comes out the bottom with the spring. With the main spring out you can remove the sear block assembly. The sear block is held in by the safety lever pivot pin. The safety is removed by first disengaging the sear spring from it's groove in the safety pin, to find it follow the pin from the safety to the right side of the frame you will see the tail of the spring laying on the pin, it actually is sitting in a groove in the pin, wedge a toothpick under it and push the spring to the right out of the groove. To remove the safety you must also disengage the detent pin from the safety, inside the rail on the left side is a very small stamped steel "V" you need to push the V to the rear to disengage the detent from the safety which you can then pull out the left side, be careful after you remove the sear block the safety detent and it's spring can fall out of the side of the frame. The sear block will then lift out of the frame. To remove the hammer, you can see there is a pin retaining the pivot pin, push the retaining pin up into the frame(it's held down by the sear block) and then the pivot out the left side of the frame, the hammer will lift out. The trigger and trigger bar are not easily removable because the trigger pin is peened into the frame, although the gun is easily cleaned at his point. Reassembly is easy just remember to retract the safety detent(push to the back) and to seat the sear spring in it's groove.