Colt CM5-Sentry M4 Carbine AR-15 Rifle .223 Rem / 5.56 NATO 16.1” Barrel Free-Float Handguard 30-Round Black

The Colt CM5-Sentry M4 Carbine is a modern Colt-built AR-15 rifle designed for shooters who want proven military-inspired performance with updated features for today’s sporting and tactical use. Chambered in both .223 Remington and 5.56 NATO, this rifle delivers the reliability, durability, and handling Colt is known for in a versatile 16.1-inch configuration.

Equipped with a free-float Colt handguard, flip-up front and rear sights, and a Magpul CTR 4-position adjustable stock, the CM5-Sentry offers a strong balance of accuracy, modularity, and shooter comfort. With a 1:7 twist barrel for optimal stabilization of a wide range of bullet weights and an A2 flash hider for classic muzzle control, this rifle is a solid choice for training, range use, and defensive-ready setups.

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Quick Highlights

• Brand: Colt

• Model: CM5-Sentry M4 Carbine

• Firearm Type: Semi-Automatic Rifle (AR-15 Platform)

• Caliber: .223 Remington / 5.56 NATO

• Barrel Length: 16.1”

• Twist Rate: 1:7

• Handguard: Colt Free-Float

• Capacity: 30+1

• Finish: Anodized Black

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Use Cases & Applications

• Tactical rifle training and drills

• Range shooting and target practice

• Home and property defense

• Optic-ready AR-15 setups

• Shooters seeking Colt M4-style reliability

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Key Benefits

• Colt-built M4-style rifle with modern enhancements

• Dual chambering supports both .223 Rem and 5.56 NATO

• Free-float handguard improves accuracy and accessory mounting

• Magpul CTR adjustable stock provides comfort and fit flexibility

• Flip-up sights included for immediate readiness

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Technical Details

• Manufacturer: Colt’s Manufacturing

• Model: CM5-Sentry M4 Carbine

• Action: Semi-Automatic

• Caliber: .223 Remington / 5.56 NATO

• Barrel Length: 16.1”

• Twist Rate: 1:7

• Finish: Anodized Black

• Handguard: Colt Free-Float

• Muzzle Device: A2 Flash Hider

• Stock: Magpul CTR 4-Position Adjustable

• Grip: A2 Style

• Sights: Flip-Up Front & Rear

• Capacity: 30 Rounds

• Magazine Included: 1

• SKU: CM556-16-M5S

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FFL Transfer Notice
This item is a firearm and must be shipped to a Federal Firearms License (FFL) dealer for transfer in accordance with applicable laws. Please ensure you select a valid FFL dealer before checkout.