As I recall, I shortened my Ubertis a slight amount so I wouldn't have to drift the catch aside. They work fine. Just make sure the pin is long enough to engage the frame at the rear. I shortened the pins on my wife's Model P Jrs and they work fine, too. I thought about taking a round file to the slot at the bottom of the frame on my '58's where the pin goes in so they could slip past the catch at an angle, but finally opted for knocking off a bit of the end of the pin.