I am gathering parts for an AICS based Remington 700 SA build and was hoping somebody here may be able to help me locate a specific bolt assembly. A while back I found a video featuring an aftermarket controlled round feed bolt, that featured a Mauser 98/Winchester 70 style extractor. I am having trouble recalling the company that was producing these, and would like to do some research on the topic before I go any further. Would anybody here happen to remember who is/was manufacturing them?