This is the right side of the upper receiver for the CZ Scorpion EVO (sometimes referred to as a receiver plate or receiver). The regulated part (the bit that requires the serial number and that which is considered the firearm from a legal perspective) on the Scorpion EVO is the right half of the receiver, despite being technically functional without it. For purposes of completing your EVO and elevating its status from an engineer's paperweight to a firearm, you can print this and assemble it all together.

This version is derived from the Scz0rpion EVO project which was produced by insertmeow of A.W.C.Y.?, so I have listed it as a mod and left the rightside A.W.C.Y.? markings intact, though the rear marking was removed for consistency with the left side of the receiver. I've also made several adjustments to the measurements to bring it more inline with a genuine version of the receiver, as opposed to the Scz0rpion. It's still slightly oversized in places, but I reason that the extra mass may aid its role as a 3D printable receiver.

Some modifications include adjusting the upper rail's Y-axis position (assuming that the muzzle is the origin and the barrel runs along the Y-axis), resizing the hole in the rear for a rearward attachment (yes, yes, I know), and proper alignment and sizing of the bottom guide block, among others.

This listing only includes the right half of the receiver in STEP and STL form. There are no other parts of the Scorpion or Scz0rpion included. Please locate those entities separately if you wish to use them. I will keep making modifications to this one over time, continually bringing it further away from the original Scz0rpion version, but I plan to eventually supercede it with a plate designed from the ground up, as making adjustments to other people's work isn't the exactly the greatest basis for dimensionally-accurate models. This version will do for now, however.

Recommended printing settings:

• Material: eSun PLA+ or Polymaker PolyLite PLA Pro
• Nozzle temp: 220°C
• Bed temp: 55°C
• Layer height: 0.16-0.20mm
• Infill: 99% / Solid
• Walls: 5+
• Supports: On, 2-3 raft layers
• Orientation: Lay flat, internals facing the bed