Well the states have chosen to ignore federal drug and immigration laws and are getting away with it, you never know. The move to more states rights is growing. I can see a state or two making a law that forbids their LE from acting or enforcing federal law on any new gun legislation. Would be more of a moral victory than anything else, but it's a start.
Regarding the pinning of a can to a short barrel, I have always thought that was a good idea. I think the market would eat up a inexpensive set up like that. When I look at what suppressors cost in Europe vs. what they cost here, I see the manufacturing costs are out of line here, so there is room to move to a more budget solution. My guess you could make a complete integrally suppressed upper, requiring 1 stamp, with a retail price of $600-700, minus bcg.
When a gunsmith and I were looking at it a couple of years ago, we had settled on a Russian design for the baffles. Basically a bent piece of steel that created 4 or so expansion chambers. The tube could be removed for cleaning of the inside, but the baffle piece would be permanently attached to the end of the barrel. It would not appeal to the latest and greatest crowd. It was very basic, did not use exotic materials or the latest in sound moderation technology. But it was quick and inexpensive to make, solid and would have performed like other budget cans. We had the cost figured that we were going to make a fair profit with a moderate volume of sales. Buyer got the benefit of a good price and only 1 stamp. Other reasons got in the way of further development.
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