AR15 Hammer pivot pin!

[You'll shoot your eye out]

So...... A dumb question. When you are installing the parts kit into an AR15 lower, the hammer comes with a tiny spring/clip installed. The pin has a corresponding groove. this is a detent intending to retain the pin? Now! How do you install the pin with its very square end to push past the spring/clip? My pin stops dead against the clip and thats that. How do you install this pin please?

 

[ROLEXrifleman]

The hammer pin and trigger pin are both the same and though it seems like it’s not that noticeable have a slight bevel to both their ends. These slight bevels along with the fact the J wire is rounded and flexes will allow the pin to go through.
If it’s that stiff and you don’t want to use a light tap to get it through, my advice would be remove the hammer from the lower and drive a pin through to ensure it’s not frozen or at least to see how much pressure it’s gonna require to push the pin theough. Also, a small enough scratch all or anything thin enough with a bevel, such as a small Phillips screwdriver, make great on the fly install tools.