7 out of 10 people found the following review helpful
Once you remove the backstrap and break the px4 down, this video is all you need to get the job done...............
https://www.youtube.com/watch?v=QZ9zBN_0Oek One this to keep in mind is when placing the pin near the hammer back in, there is a spring on the other side that may cause a slight problem. You can push it down to move it out of the way or I just tapped the pin a few times lightly with a hammer and it seated properly.
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