CMMG Adds 9mm Versions to Their MkGs GUARD Carbine Line

CMMG Releases The MkGs GUARD in 9mm

After rolling out their MkGs GUARD pistol caliber carbine in .45 ACP earlier this year, CMMG has now added a 9mm version. The good news: it utilizes standard, widely available GLOCK 33-round happy sticks. Like the .45 version, the parabellum models (six different versions) feature CMMG’s radial-delayed blowback operation (see GIF below) which is intended to minimize wear and make for a lighter rifle. Here’s their press release . . .

CMMG Releases The MkGs GUARD in 9mm 

Boonville, MO – Meet CMMGhttps://www.cmmginc.com’s new MkGs GUARD in 9mm.  The GUARD is a pistol caliber carbine (PCC) AR15 that is fed from 33-round factory Glock magazines and runs on CMMG’s patent pending Radial Delayed Blowback operating system.  An incredibly smooth shooter, the new GUARD in 9mm is a great option for home defense, PCC competition, or as a plinker to bring to the range.

The feature that sets the GUARD apart from the competition is the unique Radial Delayed Blowback operating system.

CMMG first invented Radial Delayed Blowback to reliably chamber .45 ACP, which was the first caliber introduced in the GUARD platform earlier this year. The recoil impulse of .45 ACP called for a new operating system that would compensate for the sizable recoil impulse without adding additional weight to the carrier and buffer. Straight blowback was not the solution and so Radial Delayed Blowback was born.

Now, when using the same Radial Delayed Blowback operating system to chamber 9mm, CMMG’s newest version of the GUARD boasts a lighter buffer and bolt carrier group than other 9mm PCC’s that use a straight blowback system. The combined difference in weight of the BCG and buffer when comparing straight blowback versus Radial Delayed Blowback can be as much as 6.5 ounces.

This reduction in reciprocating mass on the CMMG GUARD makes it a smoother shooting firearm, and makes it easier to keep follow-up shots on target. Whether using the GUARD for home defense or for competition, fast and accurate follow-up shots can determine success or failure.

CMMG also put a high emphasis on having fully functional AR15 controls, including last round hold open. The GUARD features an all-new patent pending dual-pinned, fully machined bolt catch linkage. This linkage provides consistent and reliable operation straight out of the box with no need for adjustments or fine tuning. The actuation from this linkage is robust enough that it still uses a standard bolt catch spring.

The MkGs GUARD comes with one 33-round factory Glock magazine. Bolt weight kits will be sold separately for those who wish to fine-tune the GUARD for suppressor usage.

Rifle, MkGs T, 9mm
PART#: 99AE631
PRODUCT DESC: Rifle, MkGs T, 9MM
BARREL: 16 inch M4 4140CM SBN, 9mm
MUZZLE: CMMG A2 Comp, Threaded ½-36
HAND GUARD: CMMG RKM11
FURNITURE: A2 Pistol Grip, M4 butt stock with 6-pos mil-spec receiver extension
RECEIVERS: Billet 7075-T6 AL Lower, Forged 7075-T6 AL Upper
TRIGGER: CMMG Single Stage Mil-Spec style trigger
MAGAZINE: Glock 9mm 33 round
WEIGHT: 6 lbs (UNLOADED)
LENGTH: 32.5 inches (STOCK COLLAPSED)
MSRP: $1,299.95

Rifle, MkGs DRB, 9mm
PART#: 99AE6C2
PRODUCT DESC: Rifle, MkGs DRB, 9MM
BARREL: 16 inch M4 4140CM SBN, 9mm
MUZZLE: CMMG SV Brake, Threaded ½-36
HAND GUARD: CMMG RKM14
FURNITURE: Magpul MOE Pistol Grip, Magpul CTR stock with 6-pos mil-spec receiver extension
RECEIVERS: Billet 7075-T6 AL Lower, Forged 7075-T6 AL Upper
TRIGGER: CMMG Single Stage Mil-Spec style trigger
MAGAZINE: Glock 9mm 33 round
WEIGHT: 6.2 lbs (UNLOADED)
LENGTH: 32.5 inches (STOCK COLLAPSED)
MSRP: $1,399.95

Rifle, MkGs DRB2, 9mm
PART#: 99AE67B
PRODUCT DESC: Rifle, MkGs DRB2, 9MM
BARREL: 16 inch M4 4140CM SBN, 9mm
MUZZLE: CMMG SV Brake, Threaded ½-36
HAND GUARD: CMMG RKM14
FURNITURE: Magpul MOE Pistol Grip, Magpul CTR stock with 6-pos mil-spec receiver extension
RECEIVERS: Billet 7075-T6 AL Lower, Forged 7075-T6 AL Upper
TRIGGER: Geissele Automatics SSA
MAGAZINE: Glock 9mm 33 round
WEIGHT: 6.2 lbs (UNLOADED)
LENGTH: 32.5 inches (STOCK COLLAPSED)
MSRP: $1,599.95

Rifle, MkGs PDW, 9mm, NFA
PART#: 99A51EC
PRODUCT DESC: Rifle, MkGs PDW, 9MM, NFA
BARREL: 8 inch 1:10 twist, Medium Taper, 4140CM, SBN
MUZZLE: CMMG A2 Comp, Threaded ½-36
HAND GUARD: CMMG RKM7
FURNITURE: Magpul MOE Pistol Grip, Magpul MOE stock with 6-pos mil-spec receiver extension
RECEIVERS: Billet 7075-T6 AL Lower, Forged 7075-T6 AL Upper
TRIGGER: CMMG Single Stage Mil-Spec style trigger
MAGAZINE: Glock 9mm 33 round
WEIGHT: 5.2 lbs (UNLOADED)
LENGTH: 25 inches (STOCK COLLAPSED)
MSRP: $1,349.95

Pistol, MkGs PDW, 9mm
PART#: 99A5165
PRODUCT DESC: Pistol, MkGs PDW, 9MM
BARREL: 8 inch 1:10 twist, Medium Taper, 4140CM, SBN
MUZZLE: CMMG A2 Comp, Threaded ½-36
HAND GUARD: CMMG RKM7
FURNITURE: Magpul MOE Pistol Grip, CMMG Pistol receiver extension
RECEIVERS: Billet 7075-T6 AL Lower, Forged 7075-T6 AL Upper
TRIGGER: CMMG Single Stage Mil-Spec style trigger
MAGAZINE: Glock 9mm 33 round
WEIGHT: 4.9 lbs (UNLOADED)
LENGTH: 24 inches
MSRP: $1,299.95

Pistol, MkGs PDW PSB, 9mm
PART#: 99A51DC
PRODUCT DESC: Pistol, MkGs PDW PSB, 9MM
BARREL: 8 inch 1:10 twist, Medium Taper, 4140CM, SBN
MUZZLE: CMMG A2 Comp, Threaded ½-36
HAND GUARD: CMMG RKM7
FURNITURE: Magpul MOE Pistol Grip, KAK Shockwave Stabilizer and Tube
RECEIVERS: Billet 7075-T6 AL Lower, Forged 7075-T6 AL Upper
TRIGGER: CMMG Single Stage Mil-Spec style trigger
MAGAZINE: Glock 9mm 33 round
WEIGHT: 4.9 lbs (UNLOADED)
LENGTH: 24 inches
MSRP: $1,349.95

CMMG Lifetime Quality Guarantee
CMMG, Inc. will guarantee its products against defects in material or workmanship. CMMG, Inc. will repair, replace or substitute part(s) (at CMMG, Inc. discretion) at no charge to the customer if a defect of material or workmanship is found. All service work must be carried out by CMMG, Inc.

About CMMG:
CMMG began in central Missouri in 2002 and quickly developed into a full-time business because of its group of knowledgeable and passionate firearms enthusiasts committed to quality and service. Its reputation was built on attention to detail, cutting edge innovation and the superior craftsmanship that comes from sourcing all their own parts. By offering high quality AR rifles, parts and accessories, CMMG’s commitment to top-quality products and professional service is as deep today as it was when it began.

comments

  1. avatar Joe R. says:

    Ok, so. . . it works, I guess (cause they’re selling them) but that short animated video looks wrong to me.

    If the round’s impulse was pushing on the bolt face (with the rear of the bolt’s lugs “chamfered”) it might well push the bolt back, and in going back (with the chamfer) it might rotate the bolt and cam pin. But what’s driving the Bolt carrier back before the bolt moves aft?

    ???

    1. avatar Joe R. says:

      The unlocking movement (created by the bolt turning) would be against the cam pin stop (hole), and jam it up. ???

    2. avatar JasonM says:

      You can see it in the animation. The chamfer causes the bolt to rotate as it retreats. The rotating bolt causes the bolt cam pin to rotate toward the top. Because the slot it runs in is closer to the chamber at the top, that causes the BCG to move rearward. It’s a lot like how the retreating BCG moves the bolt in a traditional AR, except the roles of actor and actee have switched.

      The reduced reciprocating mass (compared to direct blowback 9mm carbines) would be nice, assuming that extra friction point doesn’t affect reliability. I can feel a tiny difference in stability shooting my MPX (which has a more traditional BCG driven by the gas system) versus my Scorpion (which just has a heavy block of steel). But the Scorpion is much more reliable with a wide variety of ammo.

      But this CMMG has a a forward assist and T charging handle: the only two terrible parts of the original AR-15 design. There are enough side chargers available, I’d go with one of those. I can’t cycle a T handle without taking my face away from the gun, but I don’t want to keep my face there anyway with a T handle gun, because of all the crap it’s spewing into my face, especially with a suppressor. And a 9mm carbine is practically begging to become a suppressed SBR.

      1. avatar Joe R. says:

        Ok, my bad, took a longer look. At first it looked like the Bolt Carrier was moving before the bolt was turning.

        Does look like it would impart much more force [bolt to cam pin to bolt carrier] in attempting to move the bolt carrier.

        I don’t mind the T-handle so much (because I drive piston ARs) and I demand a dust cover and forward assist.

  2. avatar Rusty Chains says:

    I am wondering, is there some type of gas tube feeding some push on that flat faced gas key looking item? Otherwise, how is motion imparted to the bolt, and what is the purpose of that thing if not?

    Inquiring minds want to know.

    1. avatar Dillon Glenn says:

      They show this in the animation. The “gas key” is just there to prevent dropping this BCG into a standard AR gun.

  3. avatar Tom in Oregon says:

    Now make it in 10mm please….

    1. avatar Desert Dave says:

      ^^ YES!! ^^

  4. avatar Jack says:

    Big guy: check
    Big beard: check
    Big dark sunglasses: check
    Big SUV with dark windows: check
    DBAL illum/desig that won’t ever go on one of these in the “real” world: check
    Tattoos(tribal or otherwise): Fail

  5. avatar Garrison Hall says:

    A Sub 2000 is less than half the price.

  6. avatar Marc T says:

    1/2×36 thread pitch is a typo right? Should be 1/2×28?

    1. avatar BB says:

      Apparently 1/2×36 is the standard for 9mm barrels and suppressors. 1/2-28 is for a smaller caliber, the 5.56mm and various in that neighborhood, too small for 9mm.

      1. avatar Juan says:

        I have a g19 gen4 with a True Precision threaded barrel with the 1/2×28 threads for my comp.

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