Manufactured by Auto-Ordnance on contract from the United States Government, the Thompson 1928A1 is one of the signature American weapons of World War II, being deployed in every theater of the war, both in American hands and among numerous Allied units via equipment sharing and Lend-Lease supplies. The 1928A1 is still very close in overall fit and features to the original Roaring 20's/Great Depression "Chicago Typewriter" of gang warfare fame, retaining a number of options that would be eliminated from later production to lower cost and speed production. A blade front sight is installed on the Thompson/Cutts marked compensator, with a Lyman folding ladder rear sight on the receiver, fluted barrel, "RIA", "flaming bomb" and other military proofs on the receiver, grooved horizontal forearm, rear pistol grip, and a quick detach hardwood buttstock. The serial number markings on the receiver and trigger housing have been milled off, with a replacement serial number of "IRS8498A" added to the receiver over the model nomenclature. The internals are standard 1928 pattern, with the brass Blish Lock mechanism and felt-padded oiler. Included with the lot is a "U" marked Auto-Ordnance Type L 50-round drum magazine, five blued stick magazines (one WPS, four A-O), a 1942-dated USMC marked canvas mag pouch, a canvas drum pouch, and a canvas ammo pouch containing some small parts and a pistol grip style forearm.

Very fine, showing 80% of the arsenal refinished parkerization, with some areas of covered over pitting, mild spotting, bright edge wear and mild handling marks. The area around the original serial number shows heavy cleaning/polishing, suggesting a last-ditch attempt to identify the original number prior to receiving the replacement "IRS" number. The wood is fine, with some mild dings and scuffs, and the accessories are in good order. Mechanically excellent. NOTE: This weapon is a National Firearms Act (NFA), fully transferable Class 3, which is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives, (BATFE) that is classified as a "Curios or Relic" as defined in 27 CFR, 478.11. These weapons are still subject to the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 478.