Edit-

Let’s keep the thread on Topic.

Update#3 Sound Data below. This data is courtesy of nfatalk.org.

Update #2 Below, New AAC Taper Flash Hider & QD Hub.

If you have had a Resto done and have a range report please post your findings here; I’ll start below my original post



556-SD upgrade to Ranger 5.

762-SDN-6 upgrade to Ranger 7.

Size comparison to SF SOCOM556-RC & Dead Air SMS762-MIL Sandman.

Haven’t shot them yet however the upgrade is incredibly well done.

$700.00 per and 4 weeks door to door.

Update #1

Had both cans out to a metering event in NE Georgia on Saturday. Event was hosted by some of the crew that operates nfatalk.org, and had present 3 B&K 2209 Impulse Sound Meters, calibrated to NIST Standards. Meters were set up at the industry standard 1M left of muzzle, shooters right ear and shooters left ear. Temp was in the range of 103 with heat Index, sunny & winds were calm.

Both cans were tested with one unsuppressed shot with no muzzle device followed by 5 rounds Suppressed using the included Direct Thread Hub adapter.

I will update this thread once all the data is posted to the master thread for suppressor data on nfatalk.org. It usually takes those guys about a week to compile everything and get it posted.

RANGER 5

Tested using an upper consisting of an 11.5” FN barrel, carbine gas, .070 GP, low pro standard gas block, standard full auto BCG, and a new, Vltor VCH charging handle free of my normal gasket maker at the rear of the charging handle.

Ammo tested was what I assume would be the loudest 5.56 I’ve got, Federal American Eagle XM193, 55 Gr. Muzzle velocity out of an 11.5 is some where in the range of 2770-2810 or so.





Can feels great with the reduced length and lighter weight. 15.2 Oz, down from 18, While not a huge decrease it is noticeable. Definite decrease in blowback was noticed. In its original form as a 556-SD gas was instant and in your face. I attribute the decrease to the vented baffles and slightly larger 6mm Bore. I specifically threw a new untreated charging handle in this upper to see how much was really coming back and was surprised how little there was. Pretty happy with it overall, this thing is probably going to reside on a .223 Bolt gun & BCM 14.5 Recce that I’ve got.

Update- Ranger 5 Sound Data

https://nfatalk.org/forum/index.php?threads/august-26th-2023-aac-ranger-5-ar15-di-11-5in-american-eagle-55gr-test.18449/

Looking at 135.8 Muzzle, 134.7 Left Ear, 140.5 Right Ear


RANGER 7

Tested using an AAC 9” Pistol Gas upper, low pro standard gas block, standard full auto BCG, standard charging handle with gasket maker at the rear. Can’t remember what AAC was opening these gas ports to…it’s the OG AAC barrel 4150 CMV, nitride, 1-7 twist 5R rifling.

Two types of ammo were tested using the same 1 shot unsuppressed, no muzzle device followed by 5 Suppressed in the Direct Thread configuration. Can was allowed to cool slightly between the two types of ammo.

Federal Fusion MSR 150 Gr. (Super) & Sig Marksman 220 Gr. OTM (Sub). Velocity on these is pretty well established at something like ~1669 & ~960 from a 9” Barrel. If anybody has actual chrono data on these specific loads from 9” barrel please post them up.





Once again the reduced length and weight were noticeable over the SDN-6 in its original form. 7.66” & 19.85 Oz down to 6.75” & 17.2 Oz. Reduced blowback was again very noticeable as this can has more vented baffles than the Ranger 5. It was really nice with both supers and subs and cycled fine, just really pleasant overall. This will stay dedicated to this gun and continue to reside bedside as it did before the Resto.

Update- Ranger 7 Sound Data

Supersonic: https://nfatalk.org/forum/index.php?threads/august-26th-2023-aac-ranger-7-ar15-300blk-9-5in-federal-150gr-test.18450/

Looking at 137.6 Muzzle, 143 Left Ear, 142 Right Ear

Subsonic: https://nfatalk.org/forum/index.php?threads/august-26th-2023-aac-ranger-7-ar15-300blk-9-5in-sig-sauer-300blk-220gr-test.18451/

Looking at 135.2 Muzzle, 134.2 Left Ear, 133.1 Right Ear

Overall impressions are favorable. Both cans met my expectations for what I wanted out of this whole Resto process.
Money well spent for me and I’m glad I did it, brought back two can that weren’t seeing much use and now definitely will.

If you have questions or your own reviews post them up, I’ll come back with sound data when I have it.

Update #2

I have no relationship to AAC other than being a user. I have been given permission to post these new items and review them, and to my knowledge I am the only non-industry, non-dealer to have them.











These are scheduled for release at SHOT, and will be available in both 1/2”x28 and 5/8”x24.

New 90Tooth V Thread flash hider:

90TV Flash Hider 1/2-28- 4.24oz, 2.59" OAL.

3 points of retention- Large Robust Taper behind the three prongs, new V-thread pitch which I am unsure what the actual pitch is however it much finer than the old course threads from the 51T mounts, followed by the 90 Tooth Ratchet. Differing lengths of relief on each tine so no tuning fork resonance was noticed.

Lock up on this thing is extremely tight, even hand tightened I needed a tool to separate them. Rocket will absolutely be need on the barrel or this flash hider will come off with the hub. Very good gas seal when shooting, taper and threads stay remarkably clean of carbon after removal.

90TV Flash Hider 5/8-24- 4oz, 2.59" OAL

New QD 1.375-24 HUB compatible Adapter

90TV (Tapered V-thread) Adapter- 3.44oz, 1.22" of added length, 1.77" overall.

Again the new Adapter locks up incredibly tight to the new flash hiders, machining tolerances between the two are very tight, no movement between the two at all. Everything that people didn’t like about the 51T system has been fixed with these new mounts and adapters. Ratchet Latch now has 4 teeth to engage the flash hider and looks to be user serviceable as it is retained by a pin the can driven out much easier than the 51T latches. Don’t know if AAC will provide this pin but I imagine they probably would if needed. I still keep the latch fully depressed when threading until fully seated, doing this on install & removal will extend the latch life as opposed to people wanting to hear that ratchet sound…

Will come back with more review thoughts after some more time with them but initial impressions are good.



End Cap has some interesting design features. I am told those 3 rings are there for flash mitigation purposes and the difference between the old cans and these new ones is night and day difference specifically under NODS.

Update #3 will be the sound data on these cans, still waiting for this to get published to nfatalk.org

Thanks for the report, DVCNick!

My SDN6 came back

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(No use for the direct thread mount so I put the only spare HUB mount I had on it)

I expect this to be loud just based on its size (only about an inch longer than the Fat Cat.

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The other can pictured is my YHM Phantom ULT which is an awesome can and the one I use the most.

Really looking forward to seeing how it does on a subsonic 300BLK SBR.

Got mine back with the direct thread for 308. Pretty fast. No wrench but had a R-30 that fit the back. No idea how to remove the front if needed.
Yes - as with DA - the ASR does not fit.
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Will either wait until the STAMP comes back in stock or look at getting a DA and cutting it. I want to use this SDN for my 5.56 SBRs along with the AAC 5.56 can scheduled for refit once the parts are in stock. ASRs are for the 308 platform and something else for 5.56.

Did not see any anti-seize on the threads.

Mine came back yesterday, they quoted 3-5 weeks and it was barely a week and a half.  Underpromise and overdeliver!

Popped the direct mount off using a socket wrench.  No anti-seize, though I put some copper-flavor anti-seize when I put the stamp mount on.  I don’t expect to ever want to change it and I’m sure it’ll carbon-weld itself shut but at least I can pretend to have the option.

The work is nicely done, my can wasn’t very high mileage (compared to my Halo which I have abused and melted all sorts of things to) but it looks brand new now.  I didn’t take any measurements so I just have a hand-wavy feels good, maybe a bit longer opinion right now.

Hopefully I can get it to the range this weekend, I was considering a trip on Saturday if I can get away from family long enough.

How did you get a STAMP mount?

I wanted to get one for my 7.62 SDN-6 which I received back last week. But the tech said AAC won’t have STAMP mounts available for another month.

There is an internal shoulder, it looks square, and there is internal thread relief. I don’t have anything with long threads to try it on, but it looks like it will index on the muzzle.

They've been on the market for some time, just out of stock for some time. I believe the mount was developed before AAC was purchased.

My 762SDN-6 arrived there yesterday. Looking forward to the upgrade as it will be nice to have this can refreshed. Really hoping that the STAMP mount becomes available by the time they ship it back to me. Otherwise, I will have to wait for those to become available before I can try it out.

When I spoke to AAC last week  - they said the STAMP mount parts were out for refinishing.

Looks like the XENO mount can fit on these cans. It has a shorter threaded area than SICO or Keymo.

Link?

And pics, please

Merry Christmas

Looks to have a shorter sleeve after the threading. When I add up 2x mounts and 2x flash hiders - cheaper to buy the STAMP mount on sale.
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I believe the new AAC cans are using the same internal HUB mount architecture as CGS, which incorporates a tapered surface in front of the threads for secure mounting and sealing with similarly taper equipped accessories. Depending on which side of the tolerances the two parts fall on, there is a possibility the Xeno will just barely run into the taper before the flange with the tool features on the Xeno mount seats against the rear of the AAC can mount. To get a Xeno to fit without question, it would probably be necessary to zing off the short unthreaded skirt.

SilentMike
Dead Air
AAC 1998-2018

Xeno fits. I’ve run one my ranger 5 and ranger 7 without any modifications.

I purchased one back in mid-October when there were some available.  Been sitting on it so I’d be ready when/if I did the conversion.

I know people have had issues with the Plan B and some ASR hub mounts on the Ranger 5 because of the extended lip. Has anyone tried one of those mounts on a Ranger 7 or 7 Mini?

No difference in threads or interior lip/raised area on either ranger 5 or ranger 7.

Are they doing any upgrade work on the Ti-Rants, and if so what are they offering?

I have full size 9mm and .45 cans from them, and while probably not feasible, it would be great to have them re-configured to the modular style, where you could take off the front section if desired to make for a shorter can.

Damn. I think I’ll pick up another YHM SRX adapter and try that. It should fit and I already have 2 cans in hand or pending that use that system.

Still want a stamp mount so I can use on my existing 51Ts.

Ordered a YHM Kurz mount last week. Should be here today, gonna try it on my Ranger 5 since I already have YHM’s original muzzle brakes on most of my stuff.

I love the phantom mounts but the SRX looks pretty good as well. The limited testing I’ve done with mine has had no issues.

Does anyone know if once the “modernization” is done - are the 5.56 and 7.62 cans rated ok at 8” for the 5.56 and 13” for the 7.62x51 rounds?

It used to be 10.5” on the 5.56. Don’t recall about the 7.62SDN.

I have a Bren2 - 8” I am pondering about.

Stamp mounts are coming available again for those who were on the Restomod program. They emailed me today and I called and ordered one.

First batch of STAMP mounts are back in stock per AAC. Those with mods already are getting first pick.

No problem; a few more comments after shooting it briefly today, 60 125gr supers and 30 220gr subs through the same 9" BCM, zeroing a red dot and shooting all the way outside this time (I still need to revisit and fine-tune ideas about zero shift with good ammo):

I'd like to think I don't have rosy glasses on, but admit it is possible since this was a somewhat expensive upgrade... but that said, if anything, I think it may also be quieter than before, at least to the ear for this left handed shooter.  I shot a few supers without ears for science, and there was near negligible noticeable ear ringing for me.  I guess I'd say just the slightest hint of ear ringing after ~15rds, but I believe it was more before.  I believe the Dual-lok mount could also play some role here as it seals better at the taper vs. the 51T, but I doubt it is a huge factor as I don't remember the 51T letting gas all the way out the back.  But it did get into the coarse threading a lot more than it is with the Dual-lok.

Subs:  Shot the whole mag pretty fast without ears.  No ringing at all.  Before, I had been slightly disappointed in the experience as the shooter shooting subs (vs. what I had come to expect reading on the internet beforehand) since there was still some of what I figured was port pop, and ripping off a string of rounds would still result in some slight ear ringing even if there was no supersonic crack/it was a lot quieter downrange.  I don't think that is really present anymore based on early returns.

How fast is the gun getting dirty:  Before, the "BCM" logo on the carrier of this gun was gunked over in no time shooting with the SDN-6 on.  After 243rds suppressed and ~60 unsuppressed starting from a clean gun, I can still see the "BC" which I don't believe would have ever been the case before... how's that for scientific analysis?

So... weight:  Huge win.  backpressure:  gas in the face is barely noticeable even as a lefty... huge win.  Sound:  Subjective, I'm not able to shoot them side by side obviously... all disclaimers apply, but I feel like this is a win too.

In fact the only negative I can think of right now that may apply, is if you have an upper that could need extra backpressure from the can, you may be in trouble.  My 6.5" V7 upper will be up next, and I can tell you it barely cycles subs without a can, and that is when it's white-glove clean and lubed... I noticed that when initially shooting subs through it unsuppressed to verify bullet stability.  We'll see how it runs with this can on it.

But overall, so far I'm very pleased.

Mini 7 is shipping next week. That was a really quick turnaround. Unfortunately, I'll be out of town later next week for a hunting trip, so I won't have a chance to compare it against a full size 762-SDN6 and an Omega 300 for a while.

Depo on how it goes, I may do another Mini 7 or go with a full size Ranger 7.

I took my Mini 7 out today on a 10.5" 5.56 SBR using the Phantom mount and adapter. It's pretty loud, which was expected based on a short .30 can on a SBR 5.56 (the Silencer Summit data also supports that), but also has quite the impressive flash.

Once the SRX adapter gets here I'll try it out with 300 BLK which I expect to be much more appropriate.

Interested to hear how your Mini 7 vs OEM SDN-6 test goes. It m now on the hunt for a stupid cheap M4/2000 or SDN-6 in VA for a low price, ‘quick’ Form 4, and a trip back to the new AAC for the mini treatment to go along with my SDN-6 to R7 restomod.

IM sent.

I had my SDN6 and M4-2000 converted to the hub by Echo. If I wanted to send these in to AAC and have them converted to the Mini versions would that be doable? Anyone do this yet?

Yes AAC can work with their cans that ECCO has modified

Yes, this is very doable.

-New AAC guy

I got my Stamp mount from AAC yesterday and it’s now mounted. Way tighter lockup than the old 51T.

Good to hear, because I had been using hi-temp O-rings to keep the can locked tight on the 51t FH. But those eventually wear after so many rounds.

Awesome, I may just do this.

Got my 51t stamp. The modded can started out as an old 762SD that felt a foot long, so it didn't get much use. It's now about 1/4 " longer than the sdn6 and a couple of ounces lighter. As others have said, the new 51t stamp has a much tighter lockup. Hope to shoot it this weekend. Mainly use it on 223 so I don't expect miracles in the sound department, just wanted it to be shorter and more usable than when it was long. Even more tempted to send the sdn6 for the mini treatment,

Some pics compared to my sdn6:

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For me personally the resto 7 mod to the Ranger 5 length is the bees knees. This will provide more suppression than mini 7, but still be short enough to be very handy. This is after spending time with both conversions (ranger 7 with ranger 7 length and ranger 7 with ranger 5 length).  I have not run the mini 7 however.  If running direct thread probably doesn’t matter, but I was/am running other hub mounts that add more length than direct thread and really liked the ranger 5 length.

Is that a third option? Ranger 7, Mini 7 and the Ranger 7 with Ranger 5 length? Do you have specs on the last option?

New AAC Mini 7 made from old SDN6 mounted on old AAC upper.

Stamp mount works great, but I’m also going to use the YHM sRX mounts.

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Ranger 7 to Ranger 5 length

Weight and length without a mount
Length 5.696”
Weight 12.1 ounces

Does anyone have the Ranger 7, R7 Mini, and R7 at R5 specs for length and weight in one spot? Would be interesting to see them in a chart, with and without the STAMP.

Add in KSPeacekeeper's info from above.

762-SDN-6
Weight: 20.0 oz
Length: 7.66″

Converted to:

Ranger 7
Weight: 17.2 oz.
Length: 6.75" With Direct Thread Mount

Or

Ranger 7 Mini
Weight: 12.08 oz
Length: 5" With Direct Thread Mount

I weighed my full size Ranger 7 conversion straight out of the box with zero rounds on it:

15.8oz w/ supplied direct thread adapter installed
13.4oz w/no adapter installed

I'm going to start tracking this one and my Surefire Mini2 about every 500rds to see exactly how fast they are gaining weight... early returns say fast.

Anyone done an SDN to a full size Ranger 7?  I see only minis!

That’s what I did with my very used SDN-6. I’m a fan of the conversion.

They had them in stock? None in stock when my can was back to them mid Dec.

Yep, they had them on their website the other day.  Luckily I was able to grab one before they sold out.  

They’ve been reaching out to people who did the restomod.

They didn't reach out to me. I saw it here.