Alex was over digging through boxes today. Not sure if he was looking to buy or just wanted to make a mess?
Cal Ordnance Mercenary Sheridan Body Kit
Known as the Sheridan PGP Rimfire to Centerfire conversion bolt, this design uses a sled to allow the bolt to move further forward in the breech.
Ed "Smiley" Beale's modification for replacing the stock Piercing pin on a Nelson nelspot 007.