You are considering an original vintage WWII U.S. M1 Carbine Type I Flip-up Rear Sight. The type I rear sight was issued with the early model M1 Carbine during WWII. This sight is marked “S” on the left side and unmarked on the right. The condition is considered Very Good, showing typical minor wear from normal use. Order it today for your .30 Caliber Semi-Automatic M1 Carbine Rifle.
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