09-06-2011, 09:41 PM
Just take your bolt to Lowes or Home depot and find a suitable cotterpin that fits. I do believe it is the 3/32 cotterpin that actaully works. All that thing does is keep your firing pin from falling out. If purchases at a hardware store, it will be way too long and you will have to cut it to length. But, any standard steel cotterpin (stainless even better) that is the right size will work just fine. If the head of the cotterpin sticks up a little too far, remove it from the bolt and just flatten it slightly with a small hammer till it sits flush. For the price of shipping you will pay for a simple retaining pin, you could probably buy 100 cotterpins. I do believe that they stopped using the KNS style pin and went to using a cotterpin due to cost. I can't remember the details, but we had a discussion about that part in the armory one day.