Christensen Arms’ Ultralight CA9MM 9mm Carbine/Pistol

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Christensen Arms’ Ultralight CA9MM 9mm Carbine/Pistol

Christensen Arms CA9MM 2

Boasting Christensen Arms carbon-fiber wrapped barrel, the pistol-caliber carbine/pistol CA9MM lightens up the already nimble AR-15 configurations.

What The CA9MM Has To Offer:

  • Lightweight carbon-fiber wrapped barrel.
  • 9mm carbine and AR-pistol configurations.
  • Single-stage match trigger.
  • Rugged aircraft-grade aluminum receivers.

Christensen Arms is no stranger to AR-style rifles. For years the cutting-edge Utah gunmaker has churned out top-shelf semi-auto rifles with a particular bent. Lightweight and accurate , what the company calls its Modern Sporting Rifle line were dialed in primarily as game getters. Especially its AR-10s, which Christensen Arms offered in several superb hunting calibers. Though, with the latest expansion of its MSR line, the gunmaker has more than shown its rifles aren't exclusively wed to putting meat on the table.

Much more home defense than hunter, the CA9MM is a marked break for Christensen Arms. In fact, the gun is the company’s first foray into pistol-caliber ARs. And its timing to break new ground couldn’t be better. Fueled by recent events, pistol-caliber ARs and carbines have only lagged behind handguns and pump-action shotguns in sales. Perhaps the one factor that might temper CA9MM going red hot right off the bat is a somewhat hefty price tag, with Christensen Arms putting $1,495 MSRP on the 9mm. Steep for the class of gun, but Christensen Arms isn’t offering just another off-the-rack PC AR.

Christensen Arms CA9mm

For one, it comes outfitted with what the gunmaker is best known for—a lightweight and rugged carbon-fiber barrel. Available in both pistol and carbine configurations, the CA9MM comes with 16-, 10.5- and 7.5-inch barrel options. Regardless of particular design, the barrel does a number on the platform’s overall weight, in its smallest form tipping the scales at a scant 5.5 pounds. In all cases, it comes topped off with a three-prong flash hider, definitely welcome to knock down the shorter configurations’ muzzle flash.

Furthermore, Christensen Arms offers several other high-performance features on the straight-blowback operated gun, including aircraft-grade forged aluminum receivers, aluminum and carbon-aluminum hybrid handguards (3-, 6- and 9-o’clock M-Lok real estate), top Picatinny rail, QD mounts and black nitride finish bolt carrier group. The CA9MM is also equipped with a single-stage match trigger and comes with an MFT Battlelink Minimalist Stock in its carbine configuration and SB Tactical SBA3 brace as a pistol. Finally, the CA9MM is available either in black anodized or Cerakote finish of Tungsten and Burnt Bronze. And yes, the gun is compatible with Glock magazines.


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Elwood Shelton is the Digital Editor for Gun Digest. He lives in Colorado and has provided coverage on a vast spectrum of topics for GD for more than a decade. Before that, he was an award-winning sports and outdoors reporter for a number of newspapers across the Rocky Mountains. His experience has consisted of covering the spread of chronic wasting disease into the Western Slope of Colorado to the state’s ranching for wildlife programs. His passion for shooting began at a young age, fostered on pheasant hunts with his father. Since then, he has become an accomplished handloader, long-range shooter and avid hunter—particularly mule deer and any low-down, dirty varmint that comes into his crosshairs. He is a regular contributor to Gun Digest Magazine and has contributed to various books on guns and shooting, most recently Lever-Actions: A Tribute to the All-American Rifle.

1 COMMENT

  1. I’ll take my FN PS90 with its flat shooting 5.7 x 28 cartridge ANY day over a 9 mm semi-auto “sub gun”.
    YEah, my PS90 may be a bit more money but its ergonomics, accuracy, extended lethal range and low recoil all make it a better sub gun.

    And the H&K MP 7? NOPE! the round is underpowered, the gun is “unobtainium” and the ammo rare. IT is an example of the NIH (Not Invented Here) syndrome. The Germans REFUSED to OK the P90 as a NATO standard sub gun for vehicle crews and then made their own MP 7 in a hissy fit! Shame on Germany.

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