I have an Inland M1 Carbine. Serial number 4,994,***. The barrel is marked Inland Mfg. Div. General Motors 1-44. The stock is marked P-U in where the sling goes. Barrel has no pitting and is in excellent condition. Stock has some dings in it, but nothing you wouldn't really expect from a gun made over 50yrs ago. Iv shot the gun at 300 yards and hit a keg 12 out of 15 times with a steady crosswind. Any ideas on how much it would be worth?