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:
Gemtech Integra
Liberty Leonidas
Daniel Defense DDM4ISR
Spikes Tactical ST Billet Compressor (choice of two different cans a 5" one or a 9" one)
Witt Machine
Suppressed Weapon Systems

Plus these folks make them on a custom/one off basis:
SSK (JD Jones)
Johns Guns/Dark Horse
Keechi Creek Arms
Curtis Tactical
I'm sure a dozen more folks in this category!

Curtis Tactical is a member here. You may could ask him yourself.

As for the rest of them, there is one video in specific that compares 3 different blk cans. Though doesn't have as much info in them as you're looking for.

https://www.youtube.com/watch?v=tvUC4__iCy0&t=361s

Without having all the weapons subjected to identical testing you may never have your answer.It would be very difficult to discern a db or two that will separate this group.As far as quality Curtis Tactical has my vote of confidence.He's a craftsmen that will travel the extra mile for his clientele.His workmanship on baffles is superior to any others I've ever seen including my own.If you excuse me you'll like finger-banging his can.
https://goo.gl/images/C1bvSC
-CL

Eric with Suppressed Weapons Systems can probably give you some of that comparison info. When I was there last they had a Daniel Defense and a Leonidas there that they were running comparisons on. I have one of the SWS 300BlK uppers. Fun little toy. Quiet and a tack driver shot after shot. The Leonidas feels really good too but I just like how easy the SWS is on the cleaning and simplicity.

zpat wrote: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:
Gemtech Integra
Liberty Leonidas
Daniel Defense DDM4ISR
Spikes Tactical ST Billet Compressor (choice of two different cans a 5" one or a 9" one)
Witt Machine
Suppressed Weapon Systems

Plus these folks make them on a custom/one off basis:
SSK (JD Jones)
Johns Guns/Dark Horse
Keechi Creek Arms
Curtis Tactical
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.

Does anyone know if the MPX is set up to take AR type uppers? Can't find anything at Sig's page.

It is not

fishman wrote:

Does anyone know if the MPX is set up to take AR type uppers? Can't find anything at Sig's page.

It is not

I was talking to Sig at Shot Show through my local Range Manager and was told that the new Sig suppressed upper with 27 baffles designed for the MPX will fit on an AR lower... this is second hand information over the phone but I also could not find anything on Sigs page...
27 baffles in a one stamp 16" upper sounds like heaven to me!! The Sig guy told my Range Officer who was right there that it is the quietest 9mm upper ever... would love to see availability and pricing. Will probably call Sig direct on Monday and ask for engineering or management as there is a kid who anseers the phone for Sig who need to get his f'ing ass kicked... a true little bitch behind the phone...

George

An MCX upper might work on an AR, but an AR upper WILL NOT work on an MCX.

I finally got my dd isr gen 2 after 15 months of waiting and I'll say to my ear it's very quiet an I am very pleased with the sound and tone. I liked it enough that I just bought one of the noveske nsr-sd rifles which has a pinned dead air sandman ti. I will say that apparently the gen 1 dd isr's sucked pretty bad so stay clear of those but the gen 2 is good to go.

I must have just missed this 2 years ago lol. It's been a busy few years really getting the shop to where I want it. I miss the discussions here with some. We have a new integral AR platform that lets us use the air space all the way to the barrel nut adding a lot of volume, this system also gives you a fully adjustable gas block. We can do this set up in any caliber an AR can be chambered in. We have so far done 5.56, 300blk, and 458socom. Here are links to some pics.
https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

curtistactical wrote: ↑Tue Jan 07, 2020 6:56 pm I must have just missed this 2 years ago lol. It's been a busy few years really getting the shop to where I want it. I miss the discussions here with some. We have a new integral AR platform that lets us use the air space all the way to the barrel nut adding a lot of volume, this system also gives you a fully adjustable gas block. We can do this set up in any caliber an AR can be chambered in. We have so far done 5.56, 300blk, and 458socom. Here are links to some pics.
https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

Pretty interesting stuff. I'm curious could you make an lwrci piston upper integrally suppressed? I'm thinking not but you never know.

The big issue with a piston, is the clearance over/between the piston and the ID of the handguard.

Unfortunately, most handguards these days just has a small channel for a piston, which is kind of more like an arched doorway than a circle. That's the biggest issue.

Basically, it's not impossible, but would likely require a custom made handguard.

jimbo45 wrote: ↑Wed Jan 08, 2020 6:09 pm

curtistactical wrote: ↑Tue Jan 07, 2020 6:56 pm I must have just missed this 2 years ago lol. It's been a busy few years really getting the shop to where I want it. I miss the discussions here with some. We have a new integral AR platform that lets us use the air space all the way to the barrel nut adding a lot of volume, this system also gives you a fully adjustable gas block. We can do this set up in any caliber an AR can be chambered in. We have so far done 5.56, 300blk, and 458socom. Here are links to some pics.
https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

Pretty interesting stuff. I'm curious could you make an lwrci piston upper integrally suppressed? I'm thinking not but you never know.

We can do an integral on the LWRC but it is built like a lot of other companies integrals that are pretty much just a suppressor ahead of the gas block, the only time this really makes sense is if you want to have a suppressed 16" barrel so you don't need an SBR stamp.

curtistactical wrote: ↑Wed Jan 08, 2020 7:30 pm

jimbo45 wrote: ↑Wed Jan 08, 2020 6:09 pm

curtistactical wrote: ↑Tue Jan 07, 2020 6:56 pm I must have just missed this 2 years ago lol. It's been a busy few years really getting the shop to where I want it. I miss the discussions here with some. We have a new integral AR platform that lets us use the air space all the way to the barrel nut adding a lot of volume, this system also gives you a fully adjustable gas block. We can do this set up in any caliber an AR can be chambered in. We have so far done 5.56, 300blk, and 458socom. Here are links to some pics.
https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

https://www.facebook.com/94973537510970 ... =3&theater

Pretty interesting stuff. I'm curious could you make an lwrci piston upper integrally suppressed? I'm thinking not but you never know.

We can do an integral on the LWRC but it is built like a lot of other companies integrals that are pretty much just a suppressor ahead of the gas block, the only time this really makes sense is if you want to have a suppressed 16" barrel so you don't need an SBR stamp.

thanks I was curious about that. I have a sako 85 classic in 30-06 that I think would be pretty cool to have done.

thanks I was curious about that. I have a sako 85 classic in 30-06 that I think would be pretty cool to have done.
[/quote]

We build an awesome bolt action integral. You can pick your initial barrel length then just add 8" for the baffles. We can use anything from a Green Mountain up to Krieger or Bartlein barrels. The barrels are fluted for the reflex gas while maintaining rigidity and excellent accuracy. If you're interested you can email me at [email protected]

curtistactical wrote: ↑Mon Jan 13, 2020 6:44 pm thanks I was curious about that. I have a sako 85 classic in 30-06 that I think would be pretty cool to have done.

We build an awesome bolt action integral. You can pick your initial barrel length then just add 8" for the baffles. We can use anything from a Green Mountain up to Krieger or Bartlein barrels. The barrels are fluted for the reflex gas while maintaining rigidity and excellent accuracy. If you're interested you can email me at [email protected]
[/quote]

sounds good. I'll do that.