C-1688: National Postal Meter U.S. M1 Carbine in 30 Carbine with 16" Barrel. This WWII battle rifle features an adjustable ghost ring rear sight, a post front sight with protective ears, a heat shield, a bayonet lug and a 16" barrel that messures "1" at the muzzle. The gun is in excellent condition and will make a fine WWII collectable. Serial #: 4091104. Estimated Value: Low: $1,800 High: $2,000