Yes, but, selective fire weapons are heavily restricted in the USA and moreso in California.
I don't know if there are any T20s legally in private hands. If so we are talking about the price of a new Corvette.
Or a Ferrari, I found an article that said the T20E2s were converted to T36 and T37 rifles for the T65 (.308) cartridge; granddaddies of the M14.
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