5.56 Caliber MAC 10 Upper Approved!

556 SABER ART Work

The good people at Alliance Armament have developed a 5.56 caliber upper receiver for the MAC 10 submachine gun. MACs are the most affordable fully automatic firearms you can find in the USA, so this is great news! The Following was taken from Alliance’s announcement on Uzi Talk:

 “Alliance has just received full ATF approval for their SABRE upper!

5.56×45 on a MAC and accepts all AR mags including BETA-C types.

Initial run is for M10′s but M11′s and M11A1′s are in the works and should be close behind.

Alliance is currently adding all the details to their website and there’ll be a list for anyone interested in getting one.”

 

556 SABER ART Work

 

You can see a video of the upper in action here:

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Alex C.

Alex is a writer for The Firearm Blog who was born and raised in Texas with years of experience in hunting, shooting competitions, and general collecting. A degree in History from Baylor University has contributed to his love of both early and modern firearms technology, but Alex is most fond of machine guns and other NFA toys.
You can reach Alex at alex.capps@thefirearmblog.com


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  • noob

    Bravo!

  • noob

    Bravo! That’s one way to reject being enslaved by a mag well.

  • bbmg

    In that last magazine dump segment it the phrase “Runs like a sewing machine” seems really apt, do want!

  • Code Indigo

    Euro asking tech question – I thought a lower receiver was defined as ‘the gun’ because it was the recover of the bullets. This device has a separate mag well – it a appears to be trigger group, fire control ,bolt and bolt carrier group. Is this still a lower receiver in the legal sense /?

    Thank you

    • Stanislao

      As I understand it, you are correct. But if the ATF approves it, it is probably legal.

      • Paul

        This is not always the case. For example, the Sig 556 and 550 sold in the US has the serial number stamped on the upper receiver.

    • Karina

      Essentially, the “gun” as defined by the US law is anywhere the serial number is located. As mentioned, an SG550 or such will have it on the upper receiver, but AR-15s would have it on the lower receiver.

  • robert

    Well that should drive the price of the transferable macs up!

  • Ian

    I like the lazy design work in using an AR carrier and bolt. Bravo!

  • RNF

    On the Youtube clip look at the flash hider from 0:22 sec – is the barrel twisting, specificity untwisting, or do I need to upgrade my glasses?

    • Code Indigo

      Lol, well spotted – looks the same to me

      • Ben

        I think what you’re seeing at 0:22 is a factor of the camera’s frame rate. Like in a car commercial when the sports car wheels look to be spinning in reverse.
        That barrel is vibrating like crazy under sustained fire and sometimes the frame rate lines up with the flash hider ports and sometimes it doesn’t.

    • RNF

      I guess you are right… strange effect.

  • Ben Mc

    I think what you’re seeing at 0:22 is a factor of the camera’s frame rate. Like in a car commercial when the sports car wheels look to be spinning in reverse.
    That barrel is vibrating like crazy under sustained fire and sometimes the frame rate lines up with the flash hider ports and sometimes it doesn’t.

  • Ben

    My apologies for the double…damn iphone

  • Adam

    They could have made it belt fed, missed a golden opportunity here guys.

    • Alex C.

      Who says they won’t try to in the future? Seems to me like making an upper that can accept AR15/M16 pattern magazines would be a more logical choice at first, because many people have these and few people have access to large quantities of m27 links.

  • gunslinger

    i think the BATF says the “receiver” is the part that is stamped with the serial number. I’m not sure how MACs work, but i’m guessing this “barrel” can be attached to the registered receiver to convert from 9mm or 45 (not sure what it fires) to a 5.56 or .223 rifle.

    is this the case? so this means that if you have a registered FA gun, there are ways to do caliber changes and be legit?

  • Juice

    Isn’t the MAC10 pistol grip/magwell almost completely verticle?
    As much as I love this idea I guess it might be quite uncomfortable with stocks.

    • Jeff M

      Yes, the magwell/grip is the most uncomfortable part of the gun, however it is very utilitarian, the m11 accepts a lot of grease-gun-like magazines, which are just straight steel tubes basically.

      I’d like to see someone snip off the rear plate of the m11 and replace it with a latched-on bracket of some sort that you can take on and off, still compatible with the existing upper. The rear plate is always the first thing to break on an m11, the spring/buffer hits against it and the weld eventually breaks, it’s a well known problem. If the plate were removed, the magwell could serve as a forward handle and an ar-15 grip could be behind. Would make an excellent ad-hoc ar-15.

      Another possibility is a bullpup configuration where the 9mm magwell is in the rear (a long magwell, maybe it could be shortened) and the trigger is moved closer to the front of the muzzle along with a more ergonomic grip.

      If only I were a skilled machinist.

  • Jeff M

    Hey Steve how about a link to Alliance Armament ?

  • Clodboy

    Gotta love the tacticool backronym – which is not even a creative one at that, seeing as how we already have the LWRC SABR and the XM-29 SABR.

  • charlie

    Sorry I might be unknowledged about this, but why would you need ATF approval for an upper for? I totally understand if it’s the Reciever, but if it’s an additional item barrel, parts, ect, why? Seems like more paper work.

    • MosinMango

      They probably have to verify that it’s not a ‘machine gun’ stand alone to itself. Or even easily converted to other lowers.

  • Mike Knox

    0:22-0:30, Loose muzzle..

    • James Ahn

      lol, keen eyes!!

    • Idrathergofishing

      Loose barrel..