The Colt Monolithic Carbine 5.56mm 14.5in SBR (Colt part no. LE6944) is a law enforcement and military-pattern short barrel rifle built around Colt’s one-piece monolithic upper receiver with a full-length top rail. Its 14.5-inch barrel runs a carbine-length gas system for reliable cycling, and the free-floated monolithic design improves accuracy over standard two-piece upper configurations. The rifle ships with Magpul MBUS folding sights and two 20-round Colt magazines, giving buyers a complete, duty-ready package. Because the barrel measures under 16 inches, this configuration is a Title II short barrel rifle.

Key Specifications

• Chambered in 5.56mm NATO.
• 14.5-inch barrel length.
• Runs a carbine-length gas system.
• One-piece monolithic upper receiver with full-length rail.
• Includes Magpul MBUS folding backup sights.
• Ships with two 20-round Colt magazines.
• Rated capacity of 30+1 when using compatible standard-capacity magazines.
• Semi-automatic action.
• Finished in matte black.
• UPC 098289020468 identifies this exact configuration.

Frequently Asked Questions

Is this an NFA item? Yes. As an SBR, it’s a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What makes the monolithic upper different from a standard AR upper? The one-piece design ties the receiver and rail into a single free-floated unit, which improves rigidity and accuracy compared to a separately clamped handguard.

Buy the Colt Monolithic Carbine 5.56mm 14.5in SBR

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Colt‘s AR Rifle lineup and our Lubbock, Texas team will walk you through the transfer process.