This is a Colt 1921/1928 Thompson US Navy Overstamp Transferable Machine gun. This gun is in good condition and comes as shown. All Matching gun with original finish....The Marine Corps obtained a small number of these Model 1921 Thompsons in the mid-1920s and used the weapons with success in Nicaragua and China. Based on Marine combat experience, most of the unsold Model 1921 Thompsons were modified by Auto-Ordnance to reduce the rate of fire from 800-600 rounds per minute by adding a heavier actuator and had a Cutts Compensator added to the muzzle. The modified Thompsons were designated "Model 1928 Navy". Auto-Ordnance stamped "U.S. NAVY" above the model designation on the left side of the receiver and over-stamped the "1" in "1921" with "8". The Model 1928 was the most popular variation of the pre-WWII Thompson Submachine Gun. The Marine Corps and Navy purchased a small number of Model 1928 Thompsons in the late 1920s and early 1930s* .45 Caliber * 1 Stick Magazine * Excellent investment * 3 Day inspection period According to the ATF paper work Colt Manufacturing is the maker for this Machine Gun. It is our goal that you are 100 percent satisfied with our products and transaction. The buyer will have a 3 day money back inspection period after these items are received to your FFL. This gun is on a form Four in the possession of an Individual. SN 13283 SKU HLK