It's pretty easy. Pull off the stock, find the pins that holds the firing pins in, knock them to one side with a drift pin and change the firing pins. The firing pins are spring loaded but not with a lot of tension. I use a small magnet to pull them out. The pins holding the firing pins do not need to come all the way out for the firing pins to clear. They can be changed with out taking anything else out.
Where did you find your replacement firing pins?
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