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The CMMG Dissent Mk4 Upper in .22 ARC is a bufferless AR-15 platform upper receiver, engineered for users seeking advanced performance in a compact package. This upper features a 16.1-inch medium taper barrel crafted from durable 4140 chrome-moly steel, treated with a salt bath nitride finish for longevity and corrosion resistance. The compact action direct impingement system, housed within the upper, eliminates the need for a traditional buffer tube, allowing for a streamlined design and compatibility with the included 1913 Picatinny rail end plate.
Designed for AR-15 enthusiasts, this upper offers a versatile upgrade path with reliable accuracy and modern accessory compatibility. Pair it with a compatible lower to take full advantage of the high-velocity .22 ARC cartridge in a compact, innovative setup.
