Colt M4 Carbine Magpul SL 5.56 NATO 16.1″ | CR6920MPS-FDE

The Colt M4 Carbine Magpul SL is a semi-automatic AR-style carbine chambered for .223 Rem/5.56 NATO and built on a flat-top upper receiver for easy accessory mounting. This configuration pairs a 16.1″ barrel with Magpul MOE SL furniture in Flat Dark Earth and a matte-black receiver for a balanced, service-oriented platform. The rifle ships with a 30-round detachable magazine and a 1:7 twist rate suited to a broad range of bullet weights. For a practical optic option under $1000, consider the Vortex Strike Eagle 1-6×24 as a versatile red-dot/low-power variable that complements the carbine’s intended role.

Common applications for this carbine include sporting/practical target shooting and law-enforcement training scenarios where a reliable, modular AR-pattern platform is required.

Product Specifications

• The manufacturer is Colt.
• The model is listed as M4 Carbine.
• The manufacturer’s part number is CR6920MPS-FDE.
• The caliber is listed as .223 Rem/5.56 NATO.
• The barrel measures 16.1 inches.
• The overall length is 32 inches.
• The rifle ships with a detachable magazine capacity of 30 rounds.
• The action is Semi-Automatic.
• The rate of twist is 1:7.
• The receiver material is specified as 7075-T6 Aluminum.
• The stock material is Synthetic with a Flat Dark Earth finish.
• The finish of the receiver is Matte Black and the barrel finish is listed as Black.
• The package includes 1 x 30-round magazine.
• Sights are indicated as Yes (flat-top upper with sights included).
• The UPC is 098289023698.

This Colt M4 Carbine Magpul SL brings a familiar, modular AR platform with factory Magpul furniture and a proven 16.1″ barrel length. Its flat-top receiver makes adding optics and accessories straightforward, while the included Magpul components provide a comfortable ergonomic baseline straight from the factory. The combination of a 1:7 twist and the Magpul MOE SL stock and handguard makes this rifle suitable for shooters who prioritize modularity and consistent performance at common engagement distances.

Many users praise its dependable operation and the platform’s overall reliability. Owners also note the 1:7 twist and 16.1″ barrel deliver consistent accuracy across a variety of common 5.56/.223 loads.

Related Videos: