The following are close-up views of the receiver and the parts to the Kropatchek tube magazine and feed system.
Receiver, Right View Receiver, Top Showing Lift Arm and
Lift Activation Lugs (right of sear)
Trigger Group, Right View Receiver, Feed Lift Arm is Down, Opening
for Magazine Tube Below Chamber
Left Side, Close-up Of Bottom with Base Plate & Lift
Tube Magazine Port Arm Spring Removed (top)
End-Cap to Brass Magazine Tube, Closeup of Tube Magazine
Bottom View (note serial #) Cartridge Feed Plug