Here are some pics of the bolt. I removed all the metal from the inside of the Steyr bolt endcap. I drilled and tapped a hole at the rear of the bolt to accept the screw from the C&S gun. Its the same screw that holds Rich's endcap on. I then put a small piece of aluminum tubing inside of the hole to the rear of the bolt. It needed a few spacers because if i just screwed it into the end of the bolt, the bolt was to short. I used small metal washers which I had, they worked out perfectly. The bolt was solid as a rock. I then filled the rear up with some JB Weld for a smooth finish. Perfect fit in the Steyr receiver