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ATI released their polymer OMNI rifle a few years back, and now they are introducing another caliber conversion: .410 gauge shotgun shells.

The only real change is the upper receiver and bolt assembly (which wasn’t installed for the gun at the show). ATI is also producing their own line of five-round and twenty-round magazines for the project. MSRP on the whole package is about $650.

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    • Sorry, but the deadline to enter the contest for dumbest AR at SHOT has already closed.

      Maybe next year.

    • The question asked was: Can I get a .410 shotgun with a 20 round capacity?

      This is the answer.
      So, for whatever you would use a .410 shotgun for (squirrels, snakes, varmints at close range, two-legged predators), this is all that, and more.

      • Remember when Indiana Jones was dropped in that pit of snakes in Raiders? This might be the ideal gun for that scenario. Other than that, I got nothin.

        • What about a pit of squirrels? I bet you’d feel real dumb if you fell into a pit of squirrels and didn’t have this gun!

    • I’d be concerned about feeding reliability of the magazine, but otherwise it seems like a potentially successful marruage of AR-15 platform and its flexibility, with a shotgun’s ammunition and its variety.

      A shotgun offers answer to a lot of questions, what with its bird and buck shot loads, and slugs. A quarter ounce slug is about, what, twice the weight of a 55 grain .223 round? Accuracy and range may have to make compromises, but for the heavier projectile and particular application, that may be worth it.

      Seems like a viable firearm, if the magazines work well, but that’s a big if.

  1. Dunno about you but I think a 20rd .410 would be fun as heck, and useful besides.

    Will it still be able to fire .45 Colt? That’s giving me Ideas.

    • …. would be great for old folks, women and the disabled to fight off multiple home invaders too: 20 rounds means possibly not having to reload during the encounter, a big plus.

      • Yea I heard that ATI makes a wheelchair/walker mounting solution and Jitterbug is working on a oversized trigger.

      • When I read the article, I was thinking the same thing; this could actually be a viable HD gun.
        There are a lot of people who swear by the AR platform for HD; myself, I think a shotgun is far superior (don’t, just don’t. Neither of us would win such an argument.).
        This is obviously a melding of both. Make fun of it all you want, but a slug out of this is just as devastating as a .223, without the overpenetration problems. (Remember, we aren’t talking 200-300 yards, we’re talking 10, tops.)
        If the AR platform is good for a rifle or pistol bullet, why not for a shotgun? It certainly isn’t the first that has the same basic configuration. Being a .410 isn’t really a drawback for HD. While it doesn’t pack the same punch as a 12 or 20 gauge, it’s certainly nothing to sneeze at with proper loads. And it has the plus of answering one of the biggest drawbacks of traditional shotguns: ammo capacity.
        A solution looking for a problem? Hardly. A melding of two different platforms to make a good system seems like a good idea to me.

    • Magazine fed, 20 round capacity, Alternate rounds of .410 and .45 Long Colt and you have a tool suitable for the apocalypse.

    • Will it still be able to fire .45 Colt? That’s giving me Ideas.

      What’s the point? Just go buy a .45 ACP carbine.

  2. This is great for women and old folks who need something ergonomically sound, that doesn’t kick all that much and that won’t penetrate too much into neighboring houses or apartments. I hope this gun is durable and reliable. If so, I think it will fill an important niche.

    • As stated before: an answer to an un-asked question. The 5.56mm already has almost no recoil and in a light 45 grain loading, preferrably a ballistic tip of some flavor, has less wall penetration than most handguns. So why change to a shotshell then? Shot spread? At close, in-the-house distances?
      This is one of those “just because I can”-type guns.
      That said; sure, knock yourself out there dudes.

      • Ever fired a 5.56 inside a building……….it ain’t pretty. Beyond the concussion and flash rendering your hearing and vision useless temporarily you most certainly will lose a degree of hearing permanently with a nice steady ring in your ears forevermore.

  3. Perfect for introducing FUDDs to the MSR!! “Be wery wery quiet! I’m hunting tiny ducks!”

    “Widdle wabbit season!”
    “Pygmy duck season!”
    “You’re deplorable….”

  4. Wouldn’t this need to be on an AR-10 lower? Seems the shells would be too long for standard AR-15 mag length unless you had to use some super short ones.

    • .410 is 2″, 2.5″, and 3″. 5.56 is 2.26″ so short shells should fit. Incidentally, Lehigh .45 Maximum Expansion is 1.9 OAL so it should chamber in this.

      • Yeah, but how many actually make 2″ shells? It’s not something I ever recall seeing (though admittedly I’m not a fan of the .410)

        I know Aquila made some ridiculously short shells for 12ga, but it seems like this would’ve been better suited on an AR-10 lower to allow better use of calibers load options. They’re already limited as is compared to other shotshell calibers.

  5. Can you shoot Lehigh Defense Maximum Expansion out of this sucker? 20 rounds of copper broadheads that expand to almost 2″ flying at probably 1,500 fps sounds like a bad time for any intruders.

    • Sadly, probably not. I’m sure this is a smooth bore barrel, considering it’s being marketed as an AR shotgun. Rifling the barrel doesn’t make much sense, under the circumstances. Which is too bad. Being able to send a hail of those monsters at a home invader(s) would be lovely.

      • Even if it’s a smooth bore (which I agree would make the most sense), I’d be willing to bet that it’d be just dandy for shooting 45 at inside-the-house range. Probably even longer distances – think slugs, which can be reasonably accurate out to 100 yards without too much effort.

        • I think it would come down to what size choke is used. if it is too tight, you risk destroying the gun. It would have to be .452″, which is bigger than even typical cylinder choke dimensions for a .410 bore.

  6. At last! Somebody has finally invented a practical dove hunting gun where you can burn through cases of shells even faster.

    • Better not be caught hunting doves with this gun.

      You can’t have more than a three-round capability before reloading in a dove shotgun.

      • Yeah! But clays, 5 stand, now I have a chance. Give it a rifled barrel and I could hunt deer with it, WA has shot gun only areas, but pistol caliber rifles are not legal.

    • No need, I can blow away 3 or 4 boxes of 12 Ga with a double barrel shotgun and bring home my 8 birds.

      damn, those little birds cost a lot!

  7. If it would shoot .45 Colt, it might be kinda cool. Can’t think of a reason to shoot 410 out of an AR though

  8. My first thought is “Slidefire Stock”. Granny can really lay out the whoopass on the home invaders with that.

  9. This sounds like a good gun for thick brush hog hunting. Load up on 000 buck shot and kill the little piggies.

    Surprised no one has mentioned this yet.

  10. We live in crowded apartments and my 4’10, petite, pregnant wife would certainly make good use of 20 rounds of .410 buckshot.

  11. This may seem dumb but I actually want one. And 20 rounds of .410 buck is no slouch. Quick follow up shots and you might still have some hearing after shooting this in a hallway. And the fun factor would be worth it for me! Reliability is my only concern.

  12. People are all ‘answer to question never asked’, but if you can’t think of a use for a 20 round AR that can fire anything from light shot to self defense buck and .45 slugs, you’re not trying hard enough. .410 isn’t exactly cheap, but people spend more for less utility, so whatever.

    • This is a .410 BORE. That’s .040. DIFFERENT (ie smaller ) than a .452 45 colt slug. That extra 40 thou is prob gonna cause Darwin to come knocking on your door. The diff tween this and a judge is a judge happens to have a ,450 bore, and 410 chambering, this has .410 chambering AND bore…. Details!

      They used to have one of these as just an upper. Reliability/craftsmanship were lacking. They took off market, sounds like they spent 5-7 years refining it, will be fun. Don’t like it? Easily solved, don’t buy it!

  13. Just spoke to ATI- NFA applies.

    This may be the best time ever to get abolishing GCA 68 in front of the president. WE need
    To enlist the presidents sons to carry the message to the dinner table.

  14. About oh crap… 8 years ago somebody was building these. I ordered one but never got it. Now build this for my AR pistol and I’m in. Shooting Hornady critical defense rounds (41 cal hollow point and 2 buckshot) would be cool.

  15. Funny thing is, they have been working on this since the last shot show. And it sounds like they still don’t have it figured out.

  16. Not sure why all the criticism. According to GunsAmerica there are 53 calibers that can be fired off the AR 15 or AR 10 platform so why criticism of the .410? And considering they range from 22LR to .50 Beowulf the .410 not only is nicely in the middle but has a wide range of options from slugs to salt. Would not be my go to choice but certainly not any more absurd than the AR 57 upper firing 5.7x28mm round….which for the record is a hoot. If money and marriage weren’t an issue wouldn’t mind adding this to my collection.

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