Gents,
I need a safety detent for an AR -- the cat was "helping" during a trigger swap ... so after i picked up the parts, and all the bits in my wheeler screwdriver bits... well, let's say that the safety detent (not the spring) managed to escape...

The ball?

not a ball-- it as a body, with a reduced diameter tail...

heck, if anyone had one and could lift 4-5 dimensions off their's, i'll make one

Small flat on the tip
45 deg
Gauge pin your holes....leave long and adjust the length

Google has many pics but no numbers

It's round on the end like ball. Try a magnet all over the area you worked in. Also empty out the vac and then vac the whole area. That's how I find small parts that walk off.

You could probably make that in a drill if you don't have a lathe.