This automatic carbine was produced by Rock Island Armory Incorporated of Geneseo, Illinois, chiefly using military surplus M1 components. The receiver is a National Postal Meter M1 with the front receiver marking restruck for the current configuration. "N" blade front and "I.R.CO." adjustable rear sights, with a Winchester barrel, round bolt, Type III barrel band, cast trigger housing, flip switch safety and "M" marked magazine catch. The selector switch is present on the left side of the receiver. Smooth M2 profile stock with a 4-rivet handguard, low wood forearm, and no makers marks. A single "M2" marked magazine is included, as well an a magazine excerpt about M1 Carbines that discusses M2 conversions.

Very fine as refurbished with 90% of the parkerized finish, showing some light cycling wear on the bolt and operating rod path and mild handling marks overall. The stock is very good, with a light cut in the underside from the magazine catch, a small chip absent from the right side of the forearm tip, and a few dings. Mechanically excellent. Note: This weapon is a National Firearms Act (NFA), Class 3, Fully Automatic Weapon, which is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives, (BATFE) under the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 478. The transfer form lists "7.62" for the caliber instead of the more standard "30 caliber".