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The Colt M16 Upper Group with 20-inch barrel and MOE handguard strips away the extras and gives you the core platform you need to build or upgrade an AR-pattern rifle. This upper receiver assembly features the same proven Government-profile barrel used on Colt's M16A2 and M16A4 service rifles—chrome-lined bore and chamber with a 1-7 twist rate that stabilizes a wide range of .223 and 5.56 NATO loads. Paired with Magpul MOE handguards, it's fully modular right out of the box, so you can configure it for precision rifle work, duty-grade reliability, or a clean, no-nonsense range gun.
This is a stripped upper, meaning you're starting from a foundation. Colt offers this configuration with or without a charging handle and bolt carrier group, giving you the flexibility to spec the rest of your build exactly how you want it. If you're a builder who knows what goes where, or you're refreshing an existing rifle with proven Colt internals, this upper delivers the accuracy and reliability that made the M16 platform a standard for decades.
The 20-inch barrel length strikes a familiar balance between velocity and handlability—it's a workhorse for mid-range and hunting applications, and the Government profile is robust enough for hard use without excess weight. The chrome lining resists corrosion and extends barrel life, even if you're running thousands of rounds. Whether you're a serious builder, a rifleman upgrading to a quality upper, or someone who appreciates Colt's manufacturing pedigree, this M16 upper group gives you genuine mil-spec DNA at the foundation of your gun.
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