Sneak peek of suppressed full auto AR57

I blogged about the new AR57 earlier this year. The AR Five Seven is a one piece 5.7×28mm upper that attaches to a AR-15 lower and uses the 50 round FN P90 magazines. 57 Center posted a few photos of their new SBR suppressed submachine gun/PDW:

 Images 573
How cool is that!

 Images 572

UPDATE: After writing a three paragraphs about integrally suppressed firearms it turns out this is not integrally suppressed! The suppressor fits inside the handguard. I got this via. email from the 57 Center:

This particular AR57 PDW Upper in Full-Auto with 6″ Barrel, with 6.5″ Gemtech Suppressor, is currently being produced for a couple LE Agencies.

We currently have our 11″ Pistol/SBR Upper available as well as our standard 16.125″

So they are now directly competing with the full-auto FN P90. Personally, if I had a choice between this and the P90 I would go with the AR platform.

I think the pistol configuration could be a lot of fun.

UPDATE: I asked if the 6″ barrel gave adequate performance. From 57 Center:

We have excellent results with both 6″ and 11″ Pistol/SBR Barrels, this would be peoples choice, LE prefers 6″ with the 6.5″ Suppressor, this unit also works in Sub Sonic,

It is very impressive that the action can cycle subsonic rounds (a light 30-50 grain 5.7mm bullet traveling below the speed of round is comparable to a 40 grain .22 LR Standard subsonic round).

Steve Johnson

Founder and Dictator-In-Chief of TFB. A passionate gun owner, a shooting enthusiast and totally tacti-uncool. Favorite first date location: any gun range. Steve can be contacted here.


  • solomon

    have you seen the story about the korean k-11 on popular science? any additional word?

  • solomon, not that article but I have mentioned it on the blog before. I think that the bolt action instead of a semi-auto action for the grenade launcher is a good idea. Overall I wonder how effective that class of weaponry will be on the battlefield.

  • jdun1911

    OICW type weapons are POS. If I’m going to carry something that big and heavy, it might well be a dedicated grenade launcher not a half ass in between. The OICW program is a waste of money, unfortunately other nations didn’t get the memo.

    The AR57 is another reason why the AR15 is considered the best. Since the patent ran out more and more companies and private individuals are making improvement to the platform like this one.

    I take the above ad on then the OICW anytime of the day. At least it has some practical uses. Check out the video!

  • jdun1911, thanks for the link. I have posted it on the blog. very funny!

  • ValarMorghulis

    I actually got to fire one of the prototype AR57s about a month before they came out. I was at the range with a buddy and was puzzled by a guy shooting what looked like an AR15 with no mag in it. I later noticed him going to a box full of P90 mags when I made the connection.

    I asked him a little about it and he told me that he was developing it, and was just doing some extended-fire temperature tests, and asked me if I would be interested in shooting it. Afterward he told me a little about it, and I’m pretty sure I asked him three times when they would be available.

    It still strikes me as one of the more ingenious AR modifications because of its use of componants already in place, and using the lower mag-well as the brass ejection point.

  • Jon Volt

    Does the 6inch 57 barrel stabilize the bullets properly for suppression use??? I ask cause they are the same caliber size as the 5.56, and the minimum barrel length for suppressor use in a normal ar15 is 10.5 inches, anything short and the bullets will yaw and cause baffle strikes.

  • As the owner of both the 6″ 5.7 with a SWR specter suppressor and a Rock River 7.5″ short barrel rifle, I assure you, both of these function fantastically.

  • Bryan S

    Cool, if you happen to be a SOT holder or dealer, and have $400 extra for the tax stamps 🙁

    Until the 86 ban is lifted, I dont see why these are made other than they make them so they can own them (as dealer samples). yet another special class generated by the gubbiment.

  • nightrunner

    This would be a really nice upper on a registered M16 lower that a civilian CAN own. Like a legal p90

  • Say, you got a nice blog.Really thank you!

  • jarem

    will there be a semi auto none suppressed version available to civillians?if not its really really pointless.

    • Ben

      yes, the AR57 has been out for a few years now in non-NFA configuration.