Hah. Guess it makes sense. The other kit I have the pin is/was straight as far as when I inspected them. Guess I'll have to pull them out when I have time. Not even sure where the should be spring you're talking about is located.The back pin was bent on the pioneer arms ones to further keep them from being SBRd mine was the same way you also have to enlarge the hole in the receiver to allow the button to depress as they did this as a second measure you will then need a spring to make it functional all after filing your form 1 or attaching a 16” barre