SILENCER SATURDAY #36: AEM5 – 223 Remington Vs 224 Valkyrie

    AEM5

    Hello fellow shooters and welcome back to TFB’s Silencer Saturday, where we broadcast our quiet goodness around the world, even to California and New York. Today we finally take a look at a classic suppressor that is one of my personal favorites: the Allen Engineering AEM5 “MK12” model. As a special treat, we get to compare the classic 5.56 AEM5 alongside a newer version designed for the .224 Valkyrie cartridge. The goal here was to see if the extra length/volume as well as a slight baffle change would suppress the Valkyrie better than a standard AEM5. Without scrolling ahead, how do you think our initial comparison will play out?

    SILENCER SATURDAY #36: AEM5 – 223 Remington Vs 224 Valkyrie

    As far as history goes, if you haven’t had a chance to read our 2016 article on Ops Inc and Allen Engineering suppressors, I think it’s worth your time. As a more practical approach, the AEM5 is and over-the-barrel suppressor that uses a barrel profile and locking collar to mount on to a rifle as opposed to a more traditional muzzle/shoulder mounted suppressor. The resulting setup is often referred to as a reflex design that offers additional internal volume without adding excessive length.

    On the other hand, Allen Engineering suppressors tend to be on the longer and heavier side of the spectrum and are usually found on barrels 18 inches or longer. There are exceptions with certain models and mounting systems that work on shorter barrels.

    To date, the AEM5 on a MK12 is the quietest 5.56mm silencer host combination I have ever shot. I’d equate the relative report of a suppressed MK12 to an unsuppressed rimfire rifle. But I’ve never had a chance to collect some proper decibel numbers for an AEM5. To make the test more interesting, Ron Allen allowed me to borrow a new model .224 Valkyrie AEM5 that is a few inches longer with a slightly different baffle structure. How did they do? Let’s take a look at the numbers.

    Reminder: Observations posted here are specific to the time, location and hosts available. A tester at a different location or with different host weapons could record different observations for the same silencers. In addition, decibel readings are a small part of the decision process when shopping for a new silencer. Know your requirements and do your own research.


    Silencer: ALLEN ENGINEERING 224 Valkyrie AEM5

    http://aesuppressors.com/suppressors/AEM5.html

    Caliber: .224
    Length: 10.5″
    Weight: 24.6oz
    Finish: Black Oxide
    MSRP: $699

    Ammunition: 224 Valkyrie – HORNADY 88gr ELD Match

    https://www.hornady.com/ammunition/rifle/224-valkyrie-88-gr-eld-match#!/

    host: 24” bbl White Oak Armament Upper Receiver 

    https://www.whiteoakarmament.com/shop/complete-uppers/224-valkyrie.html

    Superlative Arms Adjustable Gas Block – 7 Clicks Open 

    https://suparms.com/collections/adjustable-gas-blocks-direct-impingement

    Environmental: 82 degrees, 80% humidity

    Meter: B&K 2209 Tested, Calibrated – A Weighted


    MILSTD Muzzle

    • 128.2
    • 126.5
    • 128.1
    • 127.1
    • 126.5
    • 127.8
    • 128
    • 127.3
    • 127.7
    • 126.8 BHO

    AT EAR

    • 130+
    • 131.2
    • 134.9
    • 135.9
    • 133.6 BHO
    • 127
    • 132.1
    • 134.9
    • 130.5

    SILENCER: ALLEN ENGINEERING  AEM5

    http://aesuppressors.com/suppressors/AEM5.html

    Caliber: 5.56
    Length: 8.8″
    Weight: 21oz
    Finish: Black Oxide
    MSRP: $699

    Ammunition: 223 62gr M855

    Host: 18” BCM SS410

    https://www.bravocompanyusa.com/BCM-SS410-18-Rifle-Upper-Receiver-Group-w-BCM-p/bcm-urg-18-ss410-qrf12.htm

    MILSTD Muzzle

    • 132.6
    • 130.5
    • 130.4
    • 131.1
    • 132.1
    • 131
    • 130.6
    • 130.9
    • 130.4
    • 130.3

    AT EAR

    • 139.4
    • 138.4
    • 138.3
    • 139.9
    • 139.5
    • 139.1
    • 138.8
    • 137.4
    • 139.1
    • 138.9 BHO

    SILENCER: ALLEN ENGINEERING 224 VALKYRIE AEM5

    http://aesuppressors.com/suppressors/AEM5.html

    AMMUNITION: 223 62GR M855

    HOST: 18” BCM SS410

    https://www.bravocompanyusa.com/BCM-SS410-18-Rifle-Upper-Receiver-Group-w-BCM-p/bcm-urg-18-ss410-qrf12.htm

    MILSTD Muzzle

    • 130.6
    • 130.7
    • 130.5
    • 131.2
    • 130.6
    • 130.3
    • 130.8
    • 130.6
    • 130.4
    • 131.5

    AT EAR

    • 138.7
    • 137.5
    • 137.2
    • 138.4
    • 137.9
    • 139.7
    • 136.2
    • 137.8
    • 138.9
    • 139.6 BHO

    SILENCER: ALLEN ENGINEERING AEM5

    http://aesuppressors.com/suppressors/AEM5.html

    AMMUNITION: 224 VALKYRIE – HORNADY 88GR ELD MATCH

    https://www.hornady.com/ammunition/rifle/224-valkyrie-88-gr-eld-match#!/

    HOST: 24” BBL WHITE OAK ARMAMENT UPPER RECEIVER 

    https://www.whiteoakarmament.com/shop/complete-uppers/224-valkyrie.html

    MILSTD Muzzle

    • 129
    • 126.2
    • 127
    • 127.5
    • 128.1 BHO
    • 128.6
    • 128.6
    • 126.9
    • 128.1
    • 127.4 BHO

    AT EAR

    • 130+
    • 134.1
    • 133
    • 134.4
    • 132 BHO
    • 131.6
    • 130.9
    • 129.9
    • 130.5
    • 131.5 BHO

    Conclusions

    The AEM5 offers excellent .223 Remington and .224 Valkyrie suppression. Of course, a 24” barrel allows for more (all) powder burn and with the AEM5 attached puts the muzzle of the rifle almost 10” farther away from the shooter as opposed to the 18” BCM setup.

    The more interesting comparison is swapping the .223 and .224 AEM5s in between the same hosts. In my limited testing, the extra volume and slightly different baffle structure made a negligible difference on either host/silencer combination.

    In my discussions with Ron Allen, the AEM5 seems to prefer higher velocity rounds over slower moving rounds, but without chrony, we are left with only factory velocity data. In the end, the limited decibel data I collected probably speaks to the efficiency of the original AEM5 rather than to the inefficiency of the .224 Valkyrie AEM5.

    If your host/silencer needs can accept a longer/heavier setup, the Allen Engineering AEM5 is one of the quietest 5.56 suppressors available. See you next week.

    TFB’s Silencer Saturday is brought to you by Sig Sauer




    Published on Sep 7, 2018 – Kit Badger
    See more videos here: https://kitbadger.com/ Support my videos here: https://www.patreon.com/KitBadger And find Kit Badger products here: https://kitbadger.com/shop/ WTF is 8.6 Creedmoor?  Well, a lot of people misunderstand it as a knock off of 338 Federal.  Is it similar?  Yes it is.  Is it substantially different as well?  Most certainly.  The biggest difference is in the case dimensions.  The 8.6 Creedmoor case allows for the seating of large heavy subsonic 338 projectiles.  338 Federal doesn’t allow for this. From there, the 8.6 Creedmoor continues to differentiate itself in a number of ways.  Such as being optimized for a short barrel, fast twist rate for accurate subsonic loads, reliable feeding out of 308 magazines, etc… Personally, I’m really looking forward to this cartridge.  I think it is going to be pretty awesome when it comes out.  Especially with either a Noveske Pistol or one of Q’s Fix Pistols chambered in 8.6 Creedmoor…

    SPECIAL THANKS: MAC TACTICAL FFL/SOT

    Pete

    Editor In Chief- TFB
    LE – Silencers – Science
    [email protected]


    Advertisement