Availability: In Stock
A Colt AR-15 upper receiver assembly in 5.56x45mm NATO gives you the freedom to build exactly what you want without paying for handguards you'll never use. This 16-inch barreled upper arrives as a complete, ready-to-function group—bolt carrier group and charging handle included—so you can mate it to your lower and start shooting, or swap in your choice of aftermarket handguard for a truly custom build. Whether you're refreshing a rifle, assembling a precision setup, or just want a no-compromise upper without the factory plastic, this Colt assembly delivers the quality and versatility AR builders expect.
The 16-inch barrel is threaded 1/2"-28 TPI, fitting standard suppressors and muzzle devices, and its 1:7 twist rate runs heavy 5.56 loads reliably across a wide velocity range. Button-rifled construction ensures consistent accuracy. A low-profile gas block sits flush enough to clear most free-float handguards on the market, so if you're planning a lightweight tactical rail or magnesium quad setup, this upper won't force you into compromises.
Colt's reputation for tight tolerances and quality control means you're getting a proven platform that works with any AR-15 lower receiver. No handguard means no waste—just a solid, versatile upper that begs for the furniture and finish you want to run.
| Caliber | 5.56x45mm NATO |
| Barrel Length | 16 inches |
| Barrel Type | Button-rifled |
| Twist Rate | 1:7 inches |
| Muzzle Threading | 1/2"-28 TPI |
| Gas Block | Low-profile |
| Included Components | Bolt carrier group, charging handle |
| Handguard | None included |
Yes. This is a standard Colt AR-15 upper receiver assembly that accepts any mil-spec AR-15 lower receiver.
The low-profile gas block is designed to clear most free-float handguards on the market. Since no handguard is included, you can choose any aftermarket rail or furniture that fits standard AR-15 uppers. Verify gas block clearance with your specific handguard manufacturer if needed.
The upper receiver assembly, bolt carrier group, and charging handle are included. No handguard is provided.
The 16-inch barrel and 1:7 twist rate support a wide range of 5.56 ammunition, making this upper versatile for hunting, target shooting, and tactical applications. Your accuracy will depend on your chosen handguard, optics, and ammunition.
SKU: 115710852 • Weight: 6.58oz
Availability: In Stock
A Colt AR-15 upper receiver assembly in 5.56x45mm NATO gives you the freedom to build exactly what you want without paying for handguards you'll never use. This 16-inch barreled upper arrives as a complete, ready-to-function group—bolt carrier group and charging handle included—so you can mate it to your lower and start shooting, or swap in your choice of aftermarket handguard for a truly custom build. Whether you're refreshing a rifle, assembling a precision setup, or just want a no-compromise upper without the factory plastic, this Colt assembly delivers the quality and versatility AR builders expect.
The 16-inch barrel is threaded 1/2"-28 TPI, fitting standard suppressors and muzzle devices, and its 1:7 twist rate runs heavy 5.56 loads reliably across a wide velocity range. Button-rifled construction ensures consistent accuracy. A low-profile gas block sits flush enough to clear most free-float handguards on the market, so if you're planning a lightweight tactical rail or magnesium quad setup, this upper won't force you into compromises.
Colt's reputation for tight tolerances and quality control means you're getting a proven platform that works with any AR-15 lower receiver. No handguard means no waste—just a solid, versatile upper that begs for the furniture and finish you want to run.
| Caliber | 5.56x45mm NATO |
| Barrel Length | 16 inches |
| Barrel Type | Button-rifled |
| Twist Rate | 1:7 inches |
| Muzzle Threading | 1/2"-28 TPI |
| Gas Block | Low-profile |
| Included Components | Bolt carrier group, charging handle |
| Handguard | None included |
Yes. This is a standard Colt AR-15 upper receiver assembly that accepts any mil-spec AR-15 lower receiver.
The low-profile gas block is designed to clear most free-float handguards on the market. Since no handguard is included, you can choose any aftermarket rail or furniture that fits standard AR-15 uppers. Verify gas block clearance with your specific handguard manufacturer if needed.
The upper receiver assembly, bolt carrier group, and charging handle are included. No handguard is provided.
The 16-inch barrel and 1:7 twist rate support a wide range of 5.56 ammunition, making this upper versatile for hunting, target shooting, and tactical applications. Your accuracy will depend on your chosen handguard, optics, and ammunition.
SKU: 115710852 • Weight: 6.58oz
