Hot Off the Assembly Line: Ruger AR-556 MPR

AR-556 MPR

Ruger dove into their hat of tricks once again to bring out a more specialized version of their bread ‘n butter AR-15. They have developed the AR-556 MPR (“Multi Purpose Rifle”).

The AR-556 MPR has more modern and desirable features such as M-LOK, a longer barrel and an enhanced trigger system. The evolving beast that is the AR-15 seems to get outdated as fast as iPhones or computer technology, and Ruger is trying to keep pace with the looks of this model.

This is a quick overview in Ruger’s own words:

The New AR-556 Multi-Purpose Rifle (“MPR”) is a custom-built modern sporting rifle that features an 18″ nitrided alloy barrel with rifle length gas system, Ruger’s 15″ free-float handguard compatible with M-LOK accessories, the Ruger Elite 452 AR-Trigger and ergonomic Magpul furniture. The perfect rifle for a variety of uses, the AR-556 MPR is capable and versatile.

AR-556 MPR

The most surprising feature on this rifle in my eyes is not the Ruger Elite 452 AR-Trigger or Magpul furniture or even the M-LOK. The fact that they introduced a rifle length gas system on an 18″ barrel with a thicker contour is unusual. Not unusual in the matter that it does not make sense, but very few companies offer such a configuration.

The rifle does offer some other unique and enticing qualities not to be found on your typical mid-range AR-15.

  • Ruger® Muzzle Brake – Radial Port Design that significantly reduces felt Recoil & Muzzle Movement. The 1/2″-28 Threaded Barrel allows for Standard Muzzle Accessories to be Installed
  • Bolt Carrier Group – Chrome-Plated Bolt Carrier (inside diameter) & Chrome-Plated Gas Key (inside diameter) provide exceptional resistance to Hot Gases. The Gas Key is staked so that it will not loosen after Extensive Firing. A Matte Black Oxide finish on the Exterior of the Bolt Carrier provides Corrosion Resistance
  • Barrel – Cold Hammer-Forged 4140 Chrome-Moly Steel Barrel w/ Ultra-Precise Rifling provides exceptional Accuracy, Longevity & Easy Cleaning. The 1:8″ Twist Rate stabilizes bullets from 35 – 77 grains & the 5.56 NATO chamber allows the use of both 5.56 NATO & .223 Rem ammunition. M4 feed ramps provide improved Operational Reliability & the Matte Black Nitrided finish provides Corrosion Resistance

To answer the final question you probably have in your mind… What’s the price for this bad boy? Ruger has set the MSRP at $899.99 for the new AR-556 MPR. Pretty reasonable for the features they are boasting on this rifle.

Check out the specification sheet below for a comprehensive list of features.

AR-556 MPR



The outdoors, fitness and anything related to firearms are my passions. I am a S&W Armorer, Glock Armorer, reloader and am coping with an addiction to classic S&W and Colt revolvers (by buying more revolvers). I’ve been a guest writer for Sierra Bullets and love long walks to the gun range.


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  • Paul O.

    If it’s 1 MOA or less with match ammo Ruger has something.

    • st381183

      Doesn’t an AR just need to be minute of man or beast? Are serious precision shooters using the .223 cartridge to get their precision on?

      • Porty1119

        Definitely, for those who don’t have access to a range longer than about 600m, and who like a cheap-to-shoot, low-recoil cartridge in a rifle capable of delivering rapid follow-up shots. As a paramilitary/tactical user, my precision rifle is a 20″ AR. I appreciate the flexibility that a bolt gun just doesn’t have.

        • Tim

          “….for those who don’t have access to a range longer than about 600m…..”

          That would be ~99.9% of everyone, yours truly included.

          • Porty1119

            Other than going out to a friend’s farm, it includes me as well. Living in southern Missouri, long shots are not especially common, so I focus more on my skills inside 300m or so.

        • Marcus D.

          I live in a semirural county in far northern California, and currently all the nearby ranges are at most 100 yds, with one 60 miles away that is up to 300, but with limited accessibility on weekends due to its popularity for shooting events. Hopefully by next summer a range will be opening (assuming all environmental concerns are satisfied) with ranges out to 1000 yards, IN an area surrounded by mountains, you’d think there’d be ranges with longer yardage, but nope.

          • PersonCommenting

            Any public land in California? I was able to shoot 500 yards in New Mexico a few months back while on a work trip over the weekend. It was amazing. First time in a long while ive been able to do it. had to drive about an hour. Also took me about 20 mins to set up the targets. and get my equipment out. It was worth it though. I also had to drive about an hour but Im sure there was a spot that was closer. Being from a state that didnt have public lands it was hard to find locations and where I could go so I picked an area that was easy to decide it was okay to shoot and was public land.

          • Marcus D.

            Sure, millions of acres. But most of it is steep mountains. For example, the local BLM land just outside of town has a granite mountain for am backstop, but it is only 100 yards off. There is a nice large cliff face that’s 300 yards off—but you can’t hang a target on it. Most of the valley, where you can get the range, is private

          • PersonCommenting

            Gotcha, was hoping there was more flat areas….

      • Paul O.

        DMR precision matches are a big thing where I’m at and 5.56/.223 can be very very accurate with the right platform.

      • iksnilol

        A precise gun should last longer.

        More rounds is needed to go from 1 MOA to 4 MOA than to go from 2-3 MOA to 4 MOA.

        • noob

          There should be a website you can enter your Data On Past Engagements into along with the make and model of the important firearms parts. Using big data we can see the curves of how barrels degrade over time in real weapons used by real people. Is the journey from 1moa to 2moa a steeper curve than 3moa to 4moa? Is there a gun that tends to go from 1moa to 3moa a month after break-in and then holds at 3moa for years of hard use?

          • iksnilol

            Never thought about it to that extent.

            My line of thinking is that a shot out precision gun is still a decent decent gun.

      • Edeco

        Depends on the user. There might be trade-offs, but in itself accuracy is a more is more thing. And without getting into a detailed analysis of the costs in terms of money, weight, reliability if stuff is run tight, etc the AR is pretty conducive to accuracy.

    • CommonSense23

      I really doubt Ruger is putting a true 1 MOA barrel in a 600 dollar rifle.

      • FightFireJay

        Like they do on their $400 bolt guns?

        • CommonSense23

          Big difference in pulling off 1 MOA in a semi than a bolt gun.

          • Uniform223

            Too true. Getting repeatable 1 MOA (excluding the facot of the user) on just about any semi-auto rifle is a tough enough.

          • CommonSense23

            I wouldn’t say tough with a AR platform. But expensive. Listening to our SMEs talk about it. You can expect 3 times as much for the given caliber as a bolt gun in a semi if you want it to be combat capable. Especially for something like 5.56

  • UWOTM8

    I give it a solid B for Breddy Neat.

  • Jared Vynn

    Seeing street prices from $6-700.

  • Trotro

    Well damn. If they did this in a mid-length gas system and 16 inch barrel I’d be all over it. I’m looking for a Springfield Saint that isn’t a Springfield. The regular AR556 with a free-floated barrel basically.

    • Kevin Craig

      EVERYONE makes middies. Lots of us don’t like them. This is exactly the rifle I would build, with a full length gas system and 18” barrel. No one else is doing it right now, so there’s a market for it.

      • TJbrena

        I was gonna call BS on that “no-one else is doing it right now”, but then I realized every other 18″ rifle-gas gun is either for competition or an SPR-inspired gun. This is the first I’ve seen that’s just a general purpose 18″ AR.

        • Rocky Mountain 9

          The newest-gen SIG M400 Predator is very similar to this Ruger!

          • Kevin Craig

            Two great New Hampshire companies in competition for quality and price.

            Life is good up here. 🙂

  • Michael Gallagher

    Awesome, I have been hoping for another AR with a slight difference from the millions of others that are offered in a saturated market.

    • Emfourty Gasmask

      Definitely not at that price though

  • Rjcz

    Might as well just stick with manufactures that only make ARs.

    • Laserbait

      Why?

    • Emfourty Gasmask

      So they can sale you the same exact rifle for $1500?

    • Edeco

      I am a fan of Stag.

  • Vitor Roma

    Quite nice for the price. Rifle length DI is the best DI, also good trigger of the box, m-lok, 5R barrel, 9310 bolt. Those features were only to be found in 1500+ guns some years ago.

  • Efficiency

    Man that muzzle brake is done lazy.

    • LGonDISQUS

      They know you’re gonna replace it, so they didn’t wanta spend much. Gotta scrimp somewhere, no?

  • Maximilian Johannes Benning

    Looks like they made this with the intent on it being a competition gun

    • iksnilol

      Nah, that muzzle brake is too small for that.

      • Laserbait

        That muzzle brake is cheap to make, and easy to replace. Why put on a
        large/expensive brake when most people already have an idea of the one
        that they want to use? AR’s are made to a price point, and that brake
        doesn’t cost much more than a flash hider or a thread protector. Doesn’t
        make sense to have something spendy on there there when it’s most
        likely going to be replaced eventually anyway.

    • JSmath

      >made this with the intent on it [having one tiny, specific purpose]

      It’s made to serve several purposes at once. So much so they ought to consider naming it multipurpose or something.

  • Herr Wolf

    Needs MFT Minimalist stock- nobody uses Magpul stocks any more.

    • Porty1119

      Glad to see that I am, in fact, nobody.

      I suspect use of sarcasm, however!

    • HelpMeRhonda

      The only Magpul Stock I like anymore is the MOE SL-K. It’s great on a 14.5″ pinned/welded build to keep the weight down.

      The rest of mine are either BCM Gunfighter stocks or the MFT Minimalists.

    • Laserbait

      I dislike the MFT. The shoulder rest (thing that doesn’t go up) snags on gear unless you paracord it, and I really don’t care for paracording things – looks chintzy to me. May just as well use duct tape.

      I’ll take a MOE or CTR any day of the week, and twice on Tuesday, over a MFT.

      • n0truscotsman

        I love the CTRs. I run them on everything.

    • I hate those rattle-y MFT stocks, cheap plastic for sure.

      • Herr Wolf

        I have them on 3 different rifles and they are all snug as a bug in a rug

      • JSmath

        They’re pretty good on any setting but the last two. If those two full-out positions happen to be your preference, you’re not going to like the MFT stocks, for sure.

  • Harry’s Holsters

    I checked one out at my local shop. For the price the trigger is really good. Price was $599. They said it would likely go up $70-$100 after the introductory special is over. The 4 they got in were gone already.

    • Stuki Moi

      You really are getting a sick amount of AR for the money these days……

      • Harry’s Holsters

        Agreed! And this is from an extremely well known good manufacturer. Makes me feel good about recommending it.

    • Ranger Rick

      Nice price for the specs and quality.

  • Very cool. Compares nicely with the FN 15 DMR in terms of features.

  • Brett baker

    Really wish I’d known Trump was going to win. I’d waited and got this.

  • Kivaari

    It looks like a great value.

  • Black Dots

    Rifle length?

    • Kivaari

      Gas system.

      • Black Dots

        Sorry, I was asking as to why it was rifle length. I missed the detail that the barrel is 18″. I assumed it was 16″ and was like “Huh?”

      • Swarf

        JanetBradRockyHuh!

  • Josh d

    I really wish they’d offer this exact model in 6.5grendel

    • Alex @Sea

      Amen Brother, in 6.5 that bad boy would be hell on medium game. With the Wolf 100gr steel case being so cheap you could blast away at the range.

    • Stuki Moi

      6mm is the magic number for the Grendel case…….

  • Auslander Raus

    Sportsmans Outdoor Superstore has it for $559.00 preorder.

    • Lee Enfield

      Just saw that today. Thats a hell of a price.

  • Bradley

    There are plenty of companies who sell something similar, but that does look like a great price for what you get. I wonder if it uses a standard gas block or if it is the upside down thing like their fsb.

  • FOC Ewe

    4140? PSA’s “Freedom” rifle has a better barrel for less money.

    • JSmath

      Nitrided 4140 is plenty strong and durable enough to last 99% of Americans use of longarms. Ain’t nobody buying this rifle as an autosear host to hose down invading Canadian assault bears.

    • FightFireJay

      4150 only does better in machine guns where chamber throat erosion is an issue.

      So just don’t put this upper on you NFA machine gun lower.

  • Tex Pat

    Can’t wait to move south to a state that will let citizens buy Modern Sporting Rifles.

    • Kevin Craig

      Or you could move north. Maine/New Hampshire/Vermont are gun paradise compared to most of the country (except VT still has silencer restrictions).

      • EzGoingKev

        You can say what you want about the south but no one retires and moves north.

        • Kevin Craig

          Um, excuse me? I’m right here!

          Other than three years in Germany in the Army, I lived my whole life in Arkansas and/or Texas. I transferred to NH and retired here — quite happily.

          Living in snow country does require a hardy soul and more self-reliance than flip-flop country, though.

  • 300 wm

    If it shoots good groups it’s a hell of a good value.

  • Treyh007

    Wow very nice rifle for the price, Ruger should be able to bring this in several different ways as well, 308, 300BO, 6.5CM, etc. They have become one of my favorite manufacturers over the last few years, every year they seem to release very nice firearms of good quality that the blue collar customer can afford, looking forward in seeing some reviews on this rifle. Another job well done Ruger! 👍🏻🇺🇸🇺🇸😎

  • a_b704

    I need a modern AR. My early-80’s Colt is just not tacticool enough! Although it came with sights, bayonet lug, and sling swivels.

  • Uniform223

    Me likey!!

    The only thing I would change on this is the muzzle device. Just a standard old fashion A2 flash hider for me. Now I have to choose between this and the Springfield Saint for my next AR.

  • Veritas

    2 things.

    1. Why 18″? It just seems odd. Or is it necessary for the rifle length gas system?

    2. 1 MOA at 100 yards is the standard of a quality rifle. I don’t know if it’s all the manufacturers today or the mall ninja in training that has killed bullseyes.

  • Caffeinated

    It’s like Ruger listened and researched the market instead of letting the good idea fairy take charge. What a concept.

  • Patrick Reginald

    With all the quality of a semi automatic from ruger how could you go wrong?

    • My name is Blaze

      With Ruger’s warranty and customer service how could you go wrong?

      • Patrick Reginald

        A warranty is useless when you keep getting garbage back