Colt M4 Carbine LE6921 short-barreled rifle chambered in .223 REM/5.56 NATO with a 14.5 in barrel and 30-round capacity. SBR configuration in matte black finish.
The Colt M4 Carbine LE6921 is a 14.5-inch short-barreled rifle (SBR) chambered in .223 REM / 5.56×45 NATO built to Colt’s M4 configuration. It is a semi-automatic, 30-capacity carbine presented in a matte black finish and configured with a combat-style stock and A2 front sight. For an optic under $1000 that pairs well with this carbine, consider the Vortex Strike Eagle 1-6×24 for versatile close-to-mid-range target acquisition.
This model has a long service history and has been in production for U.S. Armed Forces use since the 1990s, reflected in its mil-spec design choices. Common applications include range training and tactical/duty training scenarios.
Product Specifications
The manufacturer is listed as Colt.
The model is LE6921.
The caliber is .223 REM / 5.56×45 NATO.
The barrel length is 14.5 in.
The action is Semi-Auto.
The capacity is 30.
The finish is Matte.
The color is Black.
The overall length with the stock retracted is 30.5 in.
The overall length with the stock extended is 33.75 in.
The rifling is listed as 1/7 RH.
The effective range is stated as 600 m in source specifications.
The sights are listed as A2 front sight and Magpul MBUS flip-up rear sight.
The stock style is noted as a combat-style stock.
The UPC is 098289020178.
This Colt M4 LE6921 is built around proven M4 geometry and mil-spec components, offering a compact, familiar platform for shooters who prefer established AR-15 ergonomics in an SBR package. Controls and accessory compatibility align with common AR-pattern parts, making this rifle suitable for shooters focused on reliable, service-oriented performance.
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