Description
Upgrade your next AR-15 build with battlefield-proven reliability. This genuine Colt M4 Complete Upper Receiver Assembly delivers the uncompromising performance and military-grade durability that Colt is legendary for, packed into a highly maneuverable, compact package.
Featuring an 11.5-inch lightweight profile barrel chambered in 5.56 NATO, this upper is engineered for maximum agility, faster target transition, and reduced front-end weight without sacrificing structural integrity. It comes fully equipped and ready to drop onto your registered short-barreled rifle (SBR) or pistol lower receiver.
Key Features & Specifications:
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Caliber: 5.56 NATO / .223 Remington
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Barrel Length: 11.5 inches with a Lightweight (LW) profile
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Chrome-Lined Barrel: Ensures exceptional barrel life, corrosion resistance, and easy cleaning under harsh conditions.
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Complete Assembly: Includes a full-auto-profile Colt bolt carrier group (BCG) and charging handle.
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Sight System: Includes a Magpul MBUS rear flip-up sight paired with a classic front sight base (FSB) for an immediate, reliable sight picture.
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Handguard: Standard M4 carbine-length polymer handguard.
Why Choose the Colt 11.5" Lightweight Upper?
Whether you are building a dedicated home defense setup, a high-speed training pistol, or a duty-ready SBR, the 11.5" barrel configuration offers the ideal balance of ballistics and compact handling. By pairing Colt's strict quality control with a lightweight barrel configuration and Magpul MBUS backup sights, this complete upper receiver provides a premium, duty-grade foundation right out of the box.
Note: All NFA rules apply if pairing this upper with a standard rifle lower receiver. Ensure compliance with federal, state, and local laws regarding short-barreled firearms.
