Thread: Thompson
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Old April 3, 2013, 07:48 PM   #14
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Join Date: May 4, 2001
Posts: 7,042
take it that this gun cannot be converted to full auto.
Were there a number of these guns produced?

Any semi-auto firearm "can" be converted to full-auto if you have the equipment and know what you're doing.

When George Numrich, owner of Numrich Arms/Gun Parts Corporation/Auto Ordnance introduced the semi-auto Thompson gun in the 1960's, he bragged that he'd spent $100,000 designing a semi-auto Thompson that could not be converted to full-auto.
Within two months, Shotgun News was full of ads selling instructions on how to convert Numrich's gun to open bolt and full-auto.

The semi-auto guns are very difficult to convert because internal parts are different sizes and the receiver is lower and a full-auto bolt can't fit even if you machined things.

Numrich Arms didn't make huge numbers of the semi-auto M1 version, the 1927-A1 that looks like a Roaring Twenties Thompson gun was and is more popular.
However, after Kahr Arms bought Auto Ordnance movies like "The Band Of Brothers" and "Saving Private Ryan" popularized the WWII M1-A1 Thompson gun and the M1 model has become more popular.

Here's Auto Ordnance's web site showing all the Thompson semi-auto guns.
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