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Plenty of companies build rifles that look like an M4. Colt builds the one everybody else is copying. The LE6921 comes out of Hartford with the genuine 14.5 inch barrel length that defines the M4 platform, not the stretched 16 inch version most of the market settles for. That extra bit of trim makes a real difference when you are working around a vehicle, moving through tight spaces, or just want a carbine that balances the way the original was meant to.
The barrel is where this rifle earns its keep. It is a chrome-lined M4 contour tube with a 1:7 twist, which means it shrugs off high round counts and hot range days while stabilizing everything from 55 grain plinking ammo to heavy 77 grain match loads. Chambering covers both .223 Rem and 5.56 NATO, so you can feed it whatever is on the shelf. Up top you get a flat-top receiver with a forward assist and case deflector, an A2 style front sight post that doubles as the gas block, and a Magpul MBUS flip-up rear sight already installed. Fold the MBUS down when you mount an optic, or run irons from day one. The classic round handguard carries dual aluminum heat shields to keep your support hand comfortable during long strings.
With the four-position stock collapsed, the whole package measures about 30.5 inches and weighs in around 6.8 pounds, which is why this configuration has been the pick for patrol rifles and duty carbines for decades. Everything is standard M4 spec, so it runs common AR pattern magazines, including the 30-rounder in the box, and accepts the same stocks, grips, and mounts you already know. There is nothing experimental here, and that is exactly the appeal. This is the carbine other rifles get measured against, built by the company that has been making it longer than anyone.
The 14.5 inch barrel is the original M4 configuration, so this is the carbine as it was designed rather than a lengthened version. Velocity and effective range stay very close to a 16 inch barrel, but you gain a shorter, quicker-handling rifle that is easier to manage in vehicles and tight spaces. It is also the length collectors and clone builders look for when they want the genuine article.
It is ready to shoot out of the box. Colt includes a fixed A2 style front sight post that also serves as the gas block, and a Magpul MBUS flip-up rear sight mounted on the flat-top receiver. If you add a red dot or scope later, the MBUS folds down out of the way and works as a backup.
Yes. It feeds from standard AR pattern magazines, including the factory 30-rounder in the box as well as popular polymer mags like Magpul PMAGs. Since the receiver, controls, and furniture are all standard M4 spec, aftermarket stocks, grips, and optic mounts drop right in.
The chrome-lined barrel runs a 1:7 twist, the same rate used on military M4s. That fast twist stabilizes heavier bullets like 69 and 77 grain match loads while still shooting common 55 grain ammo just fine. Between the twist rate and the dual .223 Rem and 5.56 NATO chambering, it digests just about anything you feed it.
| UPC | 098289020178 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | LE6921 |
| Action | |
| Barrel Length | 14.5" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 |
| Color | Black |
| Model | |
| Product Type | SBR |
| Shipping Weight | 8.2 |
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