i made a body of the gun but blender is not showing the the internal body it is hollow in inside have i done something wrong (blender v 2.8) the picture is
please tell the problem??? BLENDER
If you didn't model the interior of your model, there will be nothing there. You can enter vertex/edge/face edit mode, select some verts and use hotkey 'H' to hide the selected verts and alt + 'H' to unhide them. With verts hidden you can see inside your mode to add interior.
You can also add a modifer that will add 'thickness' to your mesh so there will be an interior.