These receivers are set up for the Polish type underfolder stock.
All of the holes are CNC cut to high standards with all of the front trunnion holes Drilled, rear cut outs, and bottom push pin holes.
Authentic grip enforcement plate spot welded onto the bottom of the receiver.
These receivers come with the X & Y axis marked,
All trunion holes pre-drilled,
Sstep down top rail,
Authentic Russian type lower rails,
Manufacturer info listed on the bottom,
Made of 1050 spring steel
Heat treated to a 40 Rockwell Hardness.