Armsan RSX2 UBS (Under Barrel Shotgun)

Armsan RSX2 UBS shotgun

Turkish firm Armsan had their new RSX2 UBS shotgun on display at the IDEF expo last month. The shotgun is essentially a Armsan RSX2 shotgun without a stock or grip with a picatinny mounting adapter screwed onto the receiver, allowing it to be mounted underneath a rifle. I comes with a foldable foregrip that does not look particularly ergonomic.

Thanks to Lionel for the information and photo.




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.


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  • Vinicius Machado

    The gun doesn’t get too heavy with a under barrel shotgun?

    • Yogie

      As shown, ergonomics was not a design prerequisite… It just needs to go BOOOOM…

  • Yogie

    That is probably functional, but as butt ugly as butt ugly was designed to be…

  • John Sjöström

    Why the hell is the barrels so far apart from eachother? The barrels isn’t even in line.

  • bbmg

    It’s a bit antiquated to re-make the KAC Masterkey when the M26 is all the rage these days: http://en.wikipedia.org/wiki/M26_Modular_Accessory_Shotgun_System

  • MacK

    At what point does a lightweight composite stock and a back scabard make sense? After seeing this monstrousity.

    • Cymond

      I hear ya, but that also requires transitioning from the shotgun to the carbine.

  • noob

    somewhere, someone is planning on attaching a double barreled ar15 under a double barreled ar15. what’s under that? well it’s double barreled ar15’s all the way down….

  • gunslinger

    it’s a game changa!!! nuva-been-dun-ba-for!!!

    except for the KAC and RJF’s saiga…

  • Mr Mxyzptlk

    whenever you try and attach something like this to an AR-15 with a MIL-STD-1913 rail adapter you are always going to run into the problem of the distance between the two barrels. It’s for this reason that the M26 uses the original M203 style method of attaching it to the front of the receiver. This stand-off between the barrels tips the scales IMHO from turning operating the shotgun from awkward to near impossible. Also, I have not idea WTF they were thinking with using a vertical grip, a standard pump would be much easier to use given how low down it it (or better yet, a standard pump that telescopes over the receiver when it is pumped back in order to make it easier to reach).

  • noah meltzer

    That’s a monstrosity, neither the rifle nor the shotgun can be used properly.

  • MattInTheCouv

    stupid rail attachments is a slippery slope… and at the bottom of that slope…

    • avconsumer2

      But the hood ornament… you have to admit… you might hesitate if the opposition had a rail mounted hood ornament. Here’s hoping I never meet that adversary.

  • jabrauwnie

    another piece of shit…what dumb concept

  • Blastattack

    Terribly in-elegant design. Is there any reason why the shotgun isn’t mounted 2″ higher up? really? The complete lack of engineering is outstanding.

  • mechamaster

    It seem’s very awkward to aim and pull the shotgun trigger, and change back to rifle stance.

  • avconsumer2

    lol – wow – that’s terribad. Tough times in Turkey I assume. But hey! The foregrip folds! (?!)

  • Andrew

    Oh Jesus Christ are those UTG rails?

    VOMIT

  • Laserbait

    It provides extra weight to to help manage the fierce recoil of the 5.56×45 rounds. o_O

  • Ɠ⊙иƶǾдҡĿдиɗ

    The only good use for an under-barrel shotgun is to mount it under another shotgun to make yet another joke photo meme about over-the-top “tactical” configurations.

    Heck, while we’re at it, why don’t we mount a shotgun on a shotgun on a shotgun?