Description
There are a lot of ARs on the market, but there is only one that every other one gets compared to, and that is the Colt 6920. The CR6920 is the current production version of the famous LE6920, identical top to bottom except for the rollmark, which changed when Colt consolidated its commercial and law enforcement lines under the single Colt Carbine name. So when someone asks which AR is closest to a real issued M4, this is the straightforward answer. Same forged 7075-T6 aluminum upper and lower, same carbine-length direct impingement gas system, same no-nonsense build that has been proving itself for decades.
What Makes the CR6920 the Benchmark
The heart of this rifle is a 16.1 inch chrome-lined, M4-profile barrel with a 1:7 twist, magnetic particle inspected and capped with a classic A2 birdcage flash hider on 1/2×28 threads. That twist rate stabilizes everything from cheap 55 grain range ammo up to heavy 77 grain match loads, and the chrome lining means the bore shrugs off wear, corrosion, and neglect. Sights are handled by a fixed A2 front post paired with a Magpul MBUS Gen 2 flip-up rear, and the flat-top upper gives you full Picatinny real estate if you want to run an optic instead. M4 feed ramps, a mil-spec trigger, ejection port cover, case deflector, and a bayonet lug round out the details that matter.
Running the Colt M4 Carbine at the Range
At 6.95 pounds with a 4-position collapsible stock, the CR6920 balances the way a carbine should, quick to shoulder and easy to carry all day. Owners consistently report it feeding everything from steel case bulk ammo to match loads without a hiccup, and with decent ammunition it will hold groups tight enough to ring steel at 300 yards on irons. Whether you are setting up a home defense rifle, building your first serious AR, or just want the genuine article instead of a copy, this Colt earns its spot in the safe. It ships with one 30-round Magpul PMAG so you can head straight to the range.
Key Specifications
- Model: CR6920
- Manufacturer Part Number: CR6920
- UPC: 098289023513
- Caliber: 5.56x45mm NATO / .223 Rem
- Action: Semi-Auto, Direct Impingement
- Barrel Length: 16.1", Chrome-Lined M4 Profile
- Twist Rate: 1:7"
- Muzzle Device: A2 Birdcage Flash Hider, 1/2×28 Thread
- Capacity: 30+1
- Sights: A2 Front Post / Magpul MBUS Gen 2 Rear
- Receivers: Forged 7075-T6 Aluminum, Flat-Top Upper
- Stock: 4-Position Collapsible
- Overall Length: 32" Collapsed / 35.5" Extended
- Weight: 6.95 lbs
- Finish: Matte Black Hard Coat Anodized
- Gas System: Carbine Length
What’s Included
- Colt CR6920 M4 Carbine rifle
- 1 x 30-round Magpul PMAG magazine
- Cable lock
- Owner's manual
Frequently Asked Questions
Is the Colt CR6920 the same rifle as the LE6920?
Yes, mechanically it is the same rifle. Colt consolidated its commercial and law enforcement lines under the single Colt Carbine name, so the CR6920 carries a different rollmark but the features are identical to the LE6920 it replaced. Owners who have both report no difference in real-world performance.
Can the CR6920 shoot .223 Remington ammo?
It can. The CR6920 is chambered in 5.56 NATO, which safely handles both 5.56 and .223 Remington. The 1:7 twist barrel stabilizes a wide range of bullet weights, from 55 grain plinking loads up to 77 grain match ammunition.
Does the Colt M4 Carbine CR6920 come with sights and a magazine?
Yes on both counts. It ships with a fixed A2 front sight post and a Magpul MBUS Gen 2 flip-up rear sight, so it is usable straight out of the box. One 30-round Magpul PMAG is included, and the rifle accepts any standard AR-15/M4 pattern magazine.
Can I mount an optic on the CR6920?
Absolutely. The flat-top upper receiver has a full-length Picatinny rail, so red dots, LPVOs, and magnified optics all mount easily. The MBUS rear folds down out of the way, or you can co-witness a red dot with the irons if you prefer.





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