Have any of you guys purchased a D3LLC (Desert Design & Dev) 9SD or 4SD?

They want what for a 6061 aluminum can???

I strongly suggest you look elsewhere, like companies with reasonable pricing who don't try to market with nonsense like this: Sound Reduction: +/- 30-40dB

Every 3 decibels is a doubling of sound intensity. That means there's a really big difference between 30 and 40 dB reduction. Many of us small time mfrs don't have laboratory grade SPL meters, which are very expensive. But if we don't, we have no business using the WAG method. When people ask me, I tell them I don't have a dB figure, but 11 pairs of ears said my Phoenix is quieter than the Octane or Obsidian, so it's probably a couple dB lower. But to say it's +/- 30-40 dB reduction means I have no friggin idea if the report is closer that that of a suppressed .22 or a suppressed .308, between which there is a huge difference.

DMK said:

It's not just a can, it is also a 7" ported 9mm AR barrel. The idea being that it deflects gas into the can and lowers the velocity of 115gr ammo to subsonic (though I'd likely shoot 147gr subs anyway).

Click to expand...

I know how integrals work. My Sussurrus is firing pin click quiet







But adding a $100, maybe up to $150 9mm barrel and doing a little machine work on it doesn't justify such an exorbitant price on a can using the cheapest possible material (that's barely suitable for the task). I don't use 6061 for anything suppressor related, and no aluminum at all in something I'd consider a sub gun suppressor. Even the lowly 9mm will destroy aluminum baffles with full auto fire.

As a production item, I don't think their can & barrel combo should be any more than maybe $650-$700. It's really nothing more than a direct thread can with a big blast chamber, which are pretty easy to make. Even doing them 100% by hand on manual machines, I could be profitable selling all aluminum direct thread pistol caliber cans with K or cone baffles for $500.