Editing Thompson submachine gun (section)

====Model 1927A1====
The Model 1927A1 is a semi-automatic replica version of the Thompson, originally produced by Auto-Ordnance of [[West Hurley, New York|West Hurley]], New York for the civilian collector's market from 1974 to 1999. It has been produced since 1999 by Kahr Arms of [[Worcester, Massachusetts|Worcester]], [[Massachusetts]]. It is officially known as the "Thompson Semi-Automatic Carbine, Model of 1927A1." The internal design is completely different to operate from the closed bolt and the carbine has a barrel length of {{convert|16.5|in|mm|abbr=on}} (versus open bolt operation and barrel length of {{convert|10.5|in|mm|abbr=on}} for the fully automatic versions). Under federal regulations, these changes make the Model 1927A1 legally a rifle and remove it from the federal registry requirements of the [[National Firearms Act]]. These modern versions should not be confused with the original semi-automatic M1927, which was a slightly modified M1921 produced by Colt for Auto-Ordnance.

The Model 1927A1 is the semi-automatic replica of the Thompson Models of 1921 and 1927. The "Thompson Commando" is a semi-automatic replica of the M1928A1. The Auto-Ordnance replica of the Thompson M1 and M1A1 is known as the TM1 and may be found marked "Thompson Semi-Automatic Carbine, Caliber .45M1".