One of the most outlandish Autococker frames from the early 2000s was without a doubt the second version of the FBM Hinge. This swing frame was machined by Chris Ogaz at TnC Products / Ogaz Enterprises.
From what I can tell, this frame used standard WGP hinge frame components but instead of the WGP leaf spring (is that the right terminology?), it used a standard sear spring under the sear to put pressure on the back of the sear.
The front strap features finger grooves, the width of the frame is thicker and the grip screw holes were eliminated.
This frame is raw and pre polish and was purchased directly from Chris Ogaz. As far as I know, this style frame was not used on many TnC Products and if Chris’ TnC Products’ markers came with frames they used earlier FBM/TnC versions 1 hinge frames or ANS Quickfire single trigger sliders.