I am surprised also. All of these suggestions are good and I want to add another. Kahr sells a plastic "takedown block" (https://shopkahrfirearmsgroup.com/ca...4-8137eb92d449) for their K series guns. It inserts into the chamber and holds the slide open to exactly where the pin is removable, with no muscular strain. I have one and it works well, but any wedge shaped object of the proper width would work. A plastic pen or something whittled that could be inserted and adjusted would be fine. Once held properly, just press or tap on the right side of the pin. While it is out, you might polish the right surface of the pin. In my experience, once removed and inserted a few times it can be easily done by hand.