My Underwood carbine has no bayonet lug, but does have a ramp rear sight. The barrel is marked 12-43 underwood,one side has the boxed GHD UEF with crossed cannons. The other side is stamped O.G.E.K. In a box. It had wood damage at the wrist, but has been repaired. What can you tell me about my rifle? What am I looking at?