.30 Carbine. 18" barrel length. SN: 1393021. Parkerized metal finish with walnut semi-pistol grip high-wood I-cut stock. Gas piston operated semi-automatic rifle fed by a detachable magazine. The chamber is marked U.S. CARBINE/CAL. 30 M1 with the rear of receiver is marked UNDERWOOD over the serial number. The barrel is marked UNDERWOOD/3-43/{Flaming Bomb}. The gun is an early  1st production block carbine(1,355,000-1,449,999) that has the correct I-cut high wood stock with a correct boxed UEF/GHD inspection cartouche without an Ordnance Wheel stamp on the obverse stock. A clear {Circle-P} is stamped on the base of the pistol grip and an M-U is stamped in the sling cut out on the reverse. The Type I deep groove two-rivet handguard is stamped RMC underneath and is secured by a Type I barrel band with flat, unmarked swivel. The trigger housing is stamped with a {Flaming Bomb} underneath, a U on the inner face of the magazine well, a U on the hammer and has a blued, flat top bolt. The Type I rear sight is marked S on the left side and the front sight blade is marked U on the rear of its base. The carbine is accompanied by an IU marked oiler, a faded OD green web sling and a RUGG marked Type II magazine.