Does anyone know of a thread or review or website that has spent some time detailing the specific differences in backpressure, dB at the muzzle, dB at the shooter's ear, etc. between the various 300BLK integral uppers that are out in the market? Back several years ago it was pretty much Liberty Leonidas and that was it, but now there are over a dozen. Of course everyone's definition of integral is different, some just attach a can to a barrel in a quasi-permanent way which isn't really any different from just screwing on a can, while others are extremely integral like the Suppressed Weapons Systems and others that merge the barrel & can into one unit.
If anyone has experience with more than one integral (so as to offer constructive comparisons), that would also be useful, or specific comparisons say between using a 10" 300BLK barrel with a well known can like the Omega and an integral. Right now, here is the list of 300BLK integrals that I know of:
Daniel Defense DDM4ISR
Spikes Tactical ST Billet Compressor (choice of two different cans a 5" one or a 9" one)
Suppressed Weapon Systems
Plus these folks make them on a custom/one off basis:
SSK (JD Jones)
Johns Guns/Dark Horse
Keechi Creek Arms
I'm sure a dozen more folks in this category!
I believe that Sig demo'ed an upper for an AR platform in 9mm that uses 27 baffles and is supposed to be the quietest thing out there and they will be releasing one in Blackout after that. That's what I was told by a friend who was at the Sig Booth and relaying my questions to the Sig folks. I asked and the answer I was given was that it would be for the standard AR Platform and not just for the MPX. Does anyone know if the MPX is set up to take AR type uppers? Can't find anything at Sig's page.