Colt LE6921EPR Upper | 5.56 NATO | 14.5″

The Colt LE6921EPR is a factory-style complete upper assembly for AR-15 platforms chambered for .223 Rem/5.56 NATO and built around a 14.5″ barrel. It is finished in matte black and intended as a drop-in upper for compatible AR-15 lowers. One vendor listing indicates the upper ships with a bolt carrier group (BCG), and the 1/2-28 muzzle thread allows use with common muzzle devices.

Common applications include range practice and competition/precision shooting.

Product Specifications

• The manufacturer is Colt.
• The model designation is LE6921EPR.
• The caliber/cartridge is .223 REM/5.56 NATO.
• The barrel length is 14.5″.
• The muzzle threading is 1/2-28.
• The rate of twist is 1-7.
• The finish is Matte.
• The exterior color is Black.
• The product type is listed as a Upper.
• The style is listed as Complete.
• The subcategory is Complete Upper Receivers.
• The make is listed as AR-15.
• At least one vendor listing notes the unit ships with a BCG included in some listings.
• The UPC is 098289035509.

Whether you are building an AR-15 for extended range sessions or preparing an upper for match-level use, the Colt LE6921EPR provides a factory-style assembly with standard AR interfaces and a matte finish intended to integrate cleanly into an existing build. Its 1/2-28 muzzle thread and 1-7 twist rate support a wide range of barrel-mounted accessories and bullet weights commonly used for precision-oriented shooting.