Colt Mil-Spec AR-15 Upper Receiver – .223/5.56 NATO, Black Finish, M4 Feed Ramps, Forward Assist & Dust Cover

Built to military specs and trusted by armed forces for decades, this Colt Upper Receiver is the foundation of a rugged and reliable AR-15 build. Finished in classic black and outfitted with M4 feed ramps, forward assist, and dust cover, it’s the real deal for anyone seeking authentic mil-spec components.

​The Colt Mil-Spec AR-15 Upper Receiver is a high-quality component designed for AR-15 enthusiasts seeking reliability and compatibility with standard lower receivers. This upper receiver is machined from forged 7075-T6 aluminum and features M4 feed ramps, a forward assist, and a dust cover, making it suitable for various AR-15 builds.

✅ Features:

• Durable Construction: The forged 7075-T6 aluminum provides strength and longevity.

• Enhanced Feeding Reliability: M4 feed ramps facilitate smoother feeding of ammunition.

• Complete Assembly: Comes with a forward assist and dust cover pre-installed.

• Optic-Ready: The flat-top Picatinny rail with T-marks allows for easy mounting of optics and accessories.​

⚙️ Key Features:

• Caliber Compatibility: .223 Remington / 5.56 NATO

• Material: Forged 7075-T6 Aluminum – Hardcoat anodized for durability

• Finish: Black Mil-Spec Anodized

• Feed Ramps: M4 Style – Enhances reliability, especially with high-speed cycling

• Includes: Dust Cover & Forward Assist Pre-installed

• Upper Type: Flat-top with full-length Picatinny rail

• Compatibility: Mil-spec AR-15 lowers and barrel assemblies

Whether you’re building a duty rifle, clone-correct carbine, or reliable range gun, this upper is a battle-proven essential made to last....

FAQ:

Q: Is this a stripped or complete upper?
A: This is a complete upper receiver body — it includes the forward assist and dust cover, but does not include a barrel, BCG, or charging handle.

Q: Is it compatible with modern AR-15 parts?
A: Yes — it follows mil-spec standards and will fit any standard AR-15 lower and components.

Q: Are M4 feed ramps important?
A: Yes — they improve feeding reliability, especially when cycling rapidly or under stress, which is why they’re standard in military rifles.

Also Available :

AR-15 Upper Receivers