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Zermatt Origin vs Defiance Rebel SA Action Screw Spacing

overmatch

Sergeant of the Hide
Full Member
Minuteman
Mar 24, 2023
101
50
USA
I'm attempting to put a Zermatt Origin action in a Cadex Dual Strike Chassis that was designed for the Defiance Rebel action. I've already solved the solution of the top picatinny integral rail screw holes being in the wrong spot for the Origin vs the Rebel - those will be plugged and re-drilled.

My concern is whether or not the two actions have the same action screw spacing for purposes of mounting in the chassis. Can anyone in the know or with either an Origin or Rebel SA action chime in on what the position / spacing is for the action screws? @Zermatt Arms