USGI Semi-Auto Thompsons?

[garrettbragg12]

How often are USGI Thompson kits turned into semi-auto SBR's? Are semi-receivers available? How hard are they to put together? Thanks for your time!

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[Brian Dick]

Auto-Ordnance which was purchased by Numrich/GPC built them for many years. Now it's Kahr Arms who bought AO several years ago. I think many of the components in the older AO/Numrich guns were surplus GI. I'm not sure about the new ones from Kahr Arms. Obviously, the receivers, breech block assemblies and fire control components in the trigger group have been redesigned to BATFE standards for closed bolt, semi-auto function.

[Aragorn243]

I recently purchased an Auto Ordnance rifle and posted some photos and information about it in the "Other US Rifles section" Probably no GI parts in today's rifles. The one I have I believe to be pre-Kahr. I believe they are using the original equipment to produce them but there are obvious changes to make them semi-auto.