Welcome TomJohn....I should know this....but I was thinking both sides were the same. I've taken the part out a number of times but not recently. The pin is what retains the take down lever. Will the pin fit regardless of which face is toward the muzzle. The top of the inner take down is rounded and only about 1/8" of it is engaged by the muzzle cup when it is in the up and locked position.
I'll see if I have a picture. I have an old P22...about a 2005 model that I still shoot. 1917
I'll see if I have a picture. I have an old P22...about a 2005 model that I still shoot. 1917