Here is a TnC Products’ Rounded Blank prior to Jackal RDL (TnC Version).
I’ve posted videos on this unique TnC Products Autococker body in the past, but this clip shows the detail a little clearer.
This style is very similar to the early Jackal RDL bodies that were being made for Jeremy at Jackal Machine prior to Sergey Levkov machining RDL bodies. . The differences between this and the early TnC version of the RDL lacks the sight rail and has a slightly different cut around the detent area (and mirror).
Features of this body include the full sight rail.
The lower tube enlarged and stepped down to pre 2k banjo threads.
The Back lower tube is threaded for a screw IVG.
The feedneck is Angel threads.
The reverse detent plate is not engraved for a manufacturer (Jackal Machine or TnC Products were sometimes engraved).
Machined from solid Billet Aluminum.
This example was received as a raw body and it was sent to Technical Anodizing through Paul Schreck to be anodized Gloss Black.
The body is also very similar to the Death Trap body by TnC Products.
Find examples of the similar Death Trap bodies in the link above.
And Sergey’s version of the RDL above.