problem trigger group m14

[RCS]

1. squeeze trigger allowing the hammer to move forward. 2) hold trigger housing in palm of your, with the other hand use fingers to exert pressure against the trigger & sear.
this pressure will allow you to use the point of a dummy cartridge to drift out the trigger pin, releasing the tension on the hammer spring then lift it out. push out the hammer
pin and remove hammer, push out stud of safety from hole. Then remove trigger guard

Do you have a reason to disassemble the trigger housing ?