Angstadt Arms Announces the New Vanquish Integrally Suppressed AR9

1. The only way to eliminate the sonic crack is to reduce velocity to below the speed of sound.

   • Perhaps the adjustable ports allow for venting of gas before it exits the barrel/suppressor assembly reducing velocity of the bullet? Strictly a wild ass guess as I really don’t get much exposure to NFA let alone suppressors.

     • “Perhaps the adjustable ports allow for venting of gas before it exits the barrel/suppressor assembly reducing velocity of the bullet?”

       That’s exactly what is going on, watch the short video above.

       This interests me as a home protection AR-9…

   • That’s the purpose of the ports, but this approach makes no sense to me.

     A shorter barrel achieves the same effect in a more compact weapon. A short barrel might fail to stabilize a rifle round, but ample evidence proves that this is not the case for 9mm. This clearly is not aimed at people who are unwilling to deal with NFA items either.

     • I can only guess the ports are internal and might reduce the pressure behind the bullet by increasing the volume of the barrel in introducing the suppressor section earlier.

       • They are and they do, but IMHO they are an inferior means to that end because everything is a tradeoff until it isn’t.

         If you need the velocity and range, a barrel that length (Suomi, PPS-43) is a worthwhile tradeoff. That is rarely the case these days, though, because of the progress in intermediate-cartridge arms.

         If you not only don’t need the velocity, but specifically want to reduce it, the added length is pointless.

       • The physics from the energy aspect are this:

         basically – The ports ‘vent’ the gases into the barrel surrounding ‘shroud’ which provides a short delay of (some of) the gasses and as that delay happens it in effect changes the pressure energy differential and as that changes it lessens overall energy in the energy peaks which is where the majority of the sound producing energy resides thus you end up with a reduction in sound because the sound energy is lessened.

         Same thing happens in baffled suppressors. Its just the spaces in baffled suppressors where this can happen have less volume for the gasses to expend into and it happens behind each baffle where here in the Vanquish its happening in one big space in the barrel surrounding ‘shroud’.

       • Porting the barrel effectively shortens it since the gasses push outward instead of pushing the bullet forward. The MP5SD did a similar thing, without an adjustment option. This is why some people believe that a suppressor decreases bullet velocity. Integrally suppressed barrels are also effectively shorter because the last few inches are suppressor. A 16″ integrally suppressed 10/22 barrel, which doesn’t have porting, will have the ballistics of a 10″ barrel.

   • which is exactly what this does with its porting.

2. O’ MAN I NEED ONE IN 22LR AND 22WMR , SEEMS LIKE GOOD IDEA .
   WONDER WHAY DB REDUCE WOULD BE ???
   THANKS INFOR ALLWAYS

3. How about a 16 inch AR in 45ACP?

   • Never owned either. But wouldn’t a 9mm carbine more effective at range than a .45 acp? Past 50 yards?

     • jwm, they’re both pistol calibers so they’re both sucking wind after 50 yards. The 9mm might shoot a little flatter out to a hundred, but it gets there with less. This is why the Great I Am gave us the rifle. Our lighting bolt on Earth.

       • “jwm, they’re both pistol calibers so they’re both sucking wind after 50 yards.”

         Good thing the longest distance inside my home is well-short of half of 50 yards.

         This concept interests me, especially the claim of no first-round ‘pop’.

         I can easily see LE expressing an interest in that thing, with effectively zero additional maintenance…

       • Geoff. I’ve had a passing fancy for pistol caliber carbines. I’m getting older and older. A full powered rifle or shotgun may become too much for me in days to come.

         Pity that. I’ve always like a shotgun for the home.

       • “A full powered rifle or shotgun may become too much for me in days to come.”

         Perhaps someone who has fired a 9mm AR-platform can comment on the recoil.

         I suspect it will be substantially softer shooting than a bog-standard .223 / 5.56 rifle, due to the lower powder charge…

       • Geoff,
         All else being equal it would be, but all is equal only for the MPX (and one or two niche / custom gas-op AR9s). Delayed-blowback 9s recoil roughly similar to 5.56. Most AR9s are straight blowbacks, with a heavier bolt recoiling at a higher velocity, and therefore more recoil than 5.56.

       • Thanks, 5.56 is still considered a low-recoil, low ‘pain’ round to fire in rifle-length barrels…

       • Yes, very much so. The reasons to choose 9 instead would be cost, blast, flash, and suppressability, but not recoil.

         Another advantage of 9mm is its ability to double-stack in magazines that fit inside reasonably ergonomic grips, making for greater compactness. I am not a fan of AR9s for that reason.

   • Suppressed 45 acp would be very tempting as an inside the house defense gun, for those of us with sensitive ears. No need for the long barrel, imo.

     Otherwise, what Gadsden said.

     • I can understand using a shorter barrel. Particularly within the home. I suggested a 16 inch just to not be NFA. But then getting a suppressor means going there anyway.

       If the desire is going out 50-100+ yards then I would suggest using a something else. But for what this is and what the purpose seems to be then making 45acp an option would be nice.

4. this is cool.
   short barrel, please.

   • “short barrel, please.”

     They offer an SBR version.

     When Illinois gets their rights back, it will make a dandy home defense gun for all you-alls… 😉

5. Looks like fun honestly, would love either the long or short one truthfully. Don’t care if I have the shortest rifle on the block.

6. Angastrodem Contorix

   • Maybe a good vet can clear that up.

7. I suspect that Sleepy’s ATF will consider the ported barrel surrounded by a closed shroud cylinder is a sound suppressor requiring filing a form 1 Submitted with the $200 tax. If that’s the case might as well buy the short barrel, upper or rifle.

   • “If that’s the case might as well buy the short barrel, upper or rifle.”

     The short barrel is an additional 200 bucks, along with the suppressor assembly.

     Yeah, that sucker needs 2 stamps… 🙁

8. straight blowback?

   so more recoil than an AR15 with inferior ballistics.

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