Product Name Colt M4 Carbine 5.56NATO 16″ Barrel 30+1 CR6920
Brand Colt
Caliber 223 Remington/5.56x45mm NATO
Action Semi-Automatic
Barrel 18.00″ – 20.99″
Categories: , ,



The Colt M4 Carbine chambered in 5.56 NATO/223 Remington remains the standard for classic AR platform rifles. As some have said, Armalite put the AR in AR15 but Colt made it a household name.  A long history of military and law enforcement use has earned Colt a reputation for building quality ARs and the M4 Carbine continues that tradition. Colt remains committed to offering the highest quality products and proudly presents this Iconic rifle for sale to the US consumer market. The features of this rifle remain the same as the previous LE6920 platform with only the rollmark changing for commonality with current and future builds.

The CR6920 Colt  M4 carbie features a 16” chrome lined barrel with a 1;17 twist  and A2 flash hider. A2 fixed front and Magpul flip up rear sights provide a fast, reliable, and accurate sight picture. This rifle comes standard with a 4 position collapsible stock with front and rear sling mounts. Other standard features include a forward assist, brass deflector, and dust cover. A Picatinny rail on the upper receiver provides ample room for your choice of magnified scope or red dot sight. The Colt M4 carbine is both an iconic representation of the original M4 that is ready to go right out of the box and a fantastic starting point for your personally customized AR build.


  • 16” Chrome lined barrel with A2 flash hider.
  • A2 Front post  with Magpul rear flip up sights.
  • 4 Position collapsible stock with front and rear sling mounts.


  • Manufacturer: Colt
  • Model: M4 Carbine
  • Caliber: 5.56NATO/223 Remington
  • Barrel Length: 16.1 inches
  • Barrel Description: Chrome-Lined
  • Capacity: 30+1
  • Trigger: Standard
  • Twist: 1:7″
  • Sights: A2 Front, Magpul Rear
  • Overall Length: 35.5 inches
  • Weight: 6.9 lbs.
  • Action:  Gas Operated Semi-Auto
  • Muzzle: A2 Flash Hider
  • Finish: Matte Black
  • Features: Front Barrel Lug/ Ejection Port Cover


  • Colt M4 Carbine
  • Model: Magpul MBUS folding rear sight.
  • (1) 30 round Magpul PMAG

Bone Up On Legendary Colt Firearms

So keeping in step with the affordable AR trend, Colt is introducing the Expanse™ M4, a quality-manufactured black rifle in 5.56x45mm NATO that comes with all the basics a shooter needs to start delving into ARs and so sells at a very palatable price point. Retail priced at $699, the Expanse™ M4 could be a very attractive option for those looking for a base rifle to customize, which is one of the main draws of the AR platform.

The Expanse™ M4’s upper and lower receivers are manufactured from 7075-T6 aluminum and so have a black hardcoat anodized finish. The rifle incorporates a 16-inch, 1:7-inch twist, non-chrome-lined barrel manufactured from 4150 CMV steel with a manganese phosphate finish.

So additionally, the Expanse™ M4 comes with many of the same features found on other ARs. So namely, these include Eugene Stoner’s enduring direct-impingement gas system; an A2 front sight and A2 pistol grip; a right-handed safety selector; a standard, M4-style collapsible stock; and a Mil-Spec single-stage trigger.

And so  it does lack, however, is a forward assist and a dust cover. This is done because the average user simply doesn’t need or use these features. That said, a dust cover and forward assist can easily be added if needed.


And so everything about the Expanse™ M4 points to future customization on the part of the user. The upper receiver has a flat top for adding optics or rear iron sights, and all of the standard parts—grip, stock, safety, charging handle, handguard—can be easily replaced with aftermarket parts if desired. so this is exactly what most AR owners want from a basic rifle.

Colt Expanse M4 Specs.So the Expanse™ M4 accepts standard AR magazines and comes with a 30-round steel magazine. It has an overall length of 32 to 35.5 inches, depending on whether the stock is collapsed or fully extended.

Colt Expanse™ M4
Type    Direct-impingement gas, semi-automatic
Caliber    5.56 NATO/.223 Rem.
Barrel    16-in., 1:7-in. twist, non-chrome-lined
Overall Length    32 to 35.5 in.
Weight    6.44 lbs.
Handguard    Standard Mil Spec AR/M4
Stock    Standard collapsible Mil Spec AR/M4
Grip    Standard Mil Spec AR
Trigger    Standard Mil Spec AR
MSRP    $699


There are no reviews yet.

Be the first to review “COLT M4 CARBINE 5.56NATO 16″ BARREL 30+1 CR6920”

Your email address will not be published. Required fields are marked *


There are no reviews yet.

Be the first to review “COLT M4 CARBINE 5.56NATO 16″ BARREL 30+1 CR6920”

Your email address will not be published. Required fields are marked *