Between this pin and the bolt weight, the two greatest shortcomings of the CMMG bolt are solved. I have several thousand rounds on one of these pins. Over that time, while changing ammunition and playing with bolt weights, my last round bolt hold open has probably failed to work a dozen times and resulted in a dry fire. It’s still intact and looks to be very durable. With CMMG and Taccom pins, I had switched to a reduced power hammer spring in an effort to extend the life of each pin. When I switched to the Bore Buddy pin, I found that the increased area that is hit by the pin meant that the impression it left was very shallow. I put a full power hammer spring in and the resulting impression is ideal and well defined. I can only wonder whether this pin, aside from it’s other improvements, will prove to be more durable because it better utilizes the rim as a cushion that more gently decelerates the pin.
