CMMG Mk3 CBR (Carbine Battle Rifle)

CMMG Mk3 CBR  has announced the availability of their new CMMG Mk3 CBR (Carbine Battle Rifle). Other than the name (“Rifle Carbine” is a contradiction in my opinion), it is a very slick looking carbine with quality parts at a reasonable price of $2,000.

From the press release …

The Mk3 CBR (Carbine Battle Rifle) is chambered in .308 WIN/7.62x51mm NATO and is precision-built to deliver the relentless functionality that CMMG rifles are known for. The Mk3 CBR is an ideal rifle for long-range shooting or close-quarters action and because it’s built with CMMG’s premium manufacturing requirements, it gives shooters the chance to own a high-end AR rifle at a practical price.

The Mk3 CBR features the free float RKM15 KeyMod hand guard that measures 15 inches in length to accommodate a wide range of hand positions and allows users to attach an assortment of different accessories. The KeyMod slots are located at the 3, 6 and 9 o’clock positions with a 1913 Picatinny rail on top to give the hand guard an array of mounting options.

The KeyMod system is the new industry standard for mounting accessories. It is a simple, comfortable and lightweight solution that offers users a low profile mounting alternative to the M1913 Picatinny rail. The KeyMod system presents a new level of customization, as it allows the direct attachment of compatible accessories without the use of intermediate M1913 Picatinny rails. For accessories that are not yet KeyMod compatible, users can purchase a separate CMMG 5-slot Picatinny adapter rail that can be easily attached to any of the KeyMod slots for optimal placement of the accessories.

The Mk3 CBR rifle is constructed with a hard anodized, billet 6061-T6 aluminum receiver.  A 416 stainless barrel was selected and features a nitride finish that provides the barrel with long lasting accuracy and corrosion resistance. CMMG’s medium taper (MT) barrel is the perfect balance between weight and rigidity. The rifle also includes a CMMG SV muzzle brake, designed to reduce recoil and increase muzzle control for quick and manageable follow-up shots.

Caliber: .308 WIN/7.62x51mm NATO
Weight: 9 lbs. (unloaded), 10 lbs. (loaded with 20-rd PMAG)
Barrel: 16″ 416 Stainless Steel, 1:10″ Twist, 5/8-24 Threaded
Hand Guard: RKM15 KeyMod Hand Guard
Sights/Gas Block: Low Profile Gas Block
Muzzle: CMMG SV muzzle brake
Furniture: Magpul MOE Pistol Grip & ACS-L butt stock
Trigger: Geissele Super Semi-Automatic (SSA) 2 Stage Trigger
Magazine: 20rd Magpul 20 LR PMAG


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.


  • Sable

    WIth a forward sight block and new handguard it looks like the 308 dissipator that I always wanted…

  • S O

    What’s the point?

    There’s no “carbine” in it, and you could just as well slap rails on a G3.

    • BoHeck

      Unless you wanted an AR-10…this is very reasonable entry gun to get into the AR-10 game. And you get the ergonomics of an AR, which are undeniably light years ahead of the G3, especially when it comes to optics. It also comes with a Geissele trigger, which a G3 will never have.

      • S O

        This gun has no optics at all – it only has a rail. You can slap rails on new G3s as well.

        I’ve had a website on a category of small arms years ago and got frustrated by how gazillions of different small arms types have been created in most small arms categories. The differences seem negligible, and usually the only reason for new gun types appear to be license issues.
        I find that annoying.

        Besides, I deny that AR-15 ergonomics are “light years ahead of the G3”. The AR-15’s high sight line far from the barrel is actually a physical disadvantage, a price to be paid for straight recoil into shoulder for full auto controllability (which is a quite irrelevant feature and not really achievable in 7.62NATO anyway).

        • BoHeck

          So the fact that you can comfortably attach nearly any optic known to man or fixed sights doesn’t sit well with you?

          In order to attach a scope to the G3 platform, you either have to weld a rail to the top to get a scope on it or use the attachment that forces you to forego any cheekweld that a human could achieve.

          I actually like the HK platforms, but to say that no other guns should be invented because we already have a gun….is pretty silly to say on a firearms enthusiast site.

          • S O

            “You can slap rails on new G3s as well.”

            So which part about “new” did you not understand?

            Gazillions of different small arms designs are not enriching the supply. There are very few actually innovative and superior small arms or small arms details. This new 7.62 rifle is not among them.

      • MICHAEL

        reasonable entry to AR10? I can the new Ruger for less or the DPMS or build one for significantly less. Just because the barrel is melonited doesn’t warrant 2k imho. Hell, once you nitride the barrel the 4140/4150/stainless comp becomes less a factor. way too expensive for what you get

        • Dan

          The Ruger SR762 has an MSRP almost 200 dollars higher than the CMMG.

        • BoHeck

          Neither of those rifles have the features this one comes with from the factory. Not to mention this is a much more aesthetically pleasing rifle.

          • MICHAEL

            ? the only difference is the melonite. This rifle is almost 800 more than the dpms. The Ruger can be bought for 1700…

          • BoHeck

            Seriously? Let’s list some extras you get:

            Magpul ACS-L stock – $95
            Geissele SSA – $210
            MOE Grip
            Keymod FREEFLOAT handguard – the SR 762 is not a free floated barrel
            Compensator, not a birdcage flash hider
            Stainless barrel that is NOT chrome lined

   also lists the CMMG at $1635

            The MSRP of the Ruger is actually $200 higher than the CMMG. So street price will be about the same.

            DPMS is not even in the same category here. A piston DPMS cost just as much or more, and I don’t believe they sell a 16″ barreled piston rifle.

    • Steve (TFB Editor)

      A 16″ 7.62mm firearm is considered a carbine by many folk. If it were me, I would have cut the barrel down and welded on the brake to reduce the overall length.

  • Eric S

    Not to nitpick, but a month’s pay for an AR15 rifle that is not significantly different than any other AR15 is not what I’d consider reasonable. Is it made by dwarves from a mithril adamantum alloy?

    • Blake

      It’s chambered in .308, so it’s really more like an AR10 (pretty sure that’s an AR-10 PMAG)… Anyway personally I really can’t justify dropping more than a kilobuck on any firearm, so if I “needed” a semi-auto .308 it would be a PTR 91. But a BLR is also a really nice option.

    • Mechman

      Well, it’s different in that most AR15s aren’t AR10s.

      • Anonymoose

        But most AR10s nowadays are AR15s.

    • BoHeck

      No but the upper and lower are machined from billet, the barrel is 416 SS with melonite instead of 4140 or 4150 and chromed, has a nice keymod rail instead of plastic handguards, comes with a muzzle break instead of a birdcage flash hider, comes with a match grade trigger from Geissele instead of GI fcg, and lastly and probably most importantly, it fires 7.62 instead of 5.56 and is not, in fact, an AR-15 at all, but an AR-10.

      So it’s really about as significantly different as you can possibly get.

      • Anonymoose

        Little history lesson for you:
        The “AR-10s” we have now, including the AR-10B, are all AR-15s. Until the SR-25 (essentially an AR-15A2 scaled up to fire .308/7.62 NATO) came out in the early 90s and Armalite developed the AR-10B (also essentially an AR-15A2 and not a direct development of their original AR-10) as a competitor to it, “AR-10” meant original AR-10 rifles of the pattern developed in the 1950s. Nowadays, any DI rifle in .308 is called an “AR-10” by most of the gun community, despite them all being indirect descendants of the actual AR-10 via the AR-15A2.

        • MOG

          What was the question again?

    • Steve (TFB Editor)

      For the parts used I think its reasonable. Sure you can buy two or three cheap AR-15s for the same price but this is a premium AR-10 (Toyota Prius vs. Ford Mustang?)

      • Giolli Joker

        Good point, bad example (the ugly Prius is more technologically advanced than the sexy Mustang). 😛

      • Eric S

        I’ll buy that. I just the industry is moving in an odd direction when a semi auto rifle for $2k is considered reasonable. Which is right up there with the $1500 AK and the $500 single shot derringer. I understand inflation is getting worse, but who is their market? Besides, I’d rather drop that kind of change on a custom FAL with wood furniture.

        • Geodkyt

          Well, you COULD go with a custoim FAL, spend twice as much, and have a rifle that is less accurate, true. But it would look really pretty. . . (Don’t get me wrong, I own two FALs. But they are not, and never have been, known for accuracy.)

    • DiverEngrSL17K

      I think “unobtanium” is the term generally used :).

  • JT

    nope. I think they still believe that the AR-15 buying craze is still going strong. As is I’ll probably just buy an upper and some new furniture, maybe a piston kit if I “go wild” with it

  • Mr Mxyzptlk

    Obviously they are trying to distinguish this “rifle carbine” from the “musket carbines” (like a Brown Bess Cavalry Carbine) that inferior operators are carrying these days.

    • Steve (TFB Editor)

      Now I get it 😉

  • hami

    That looks like a very nice weapon with the appropriate attention to detail. I think at a street price of a couple hundred dollars less that 2K CMMG will have a real winner on their hands.

  • Lance

    Another overpriced AR-10 yawn!!!!

  • MOG

    Unfortunately, I don’t live in the $2000 neighborhood. As is, I had to take the tires off the house and put them on the truck. I like the 7.62 NATO part tho. (Did most of our ‘running thru the jungle’ with M14s, before we got the Mattel Toys).