Colt Firearms M4 Complete Upper Assembly Only Black .223 Rem / 5.56 11.5-inch
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Overview
The Colt Firearms M4 Complete Upper Assembly Only Black .223 Rem / 5.56 11.5-inch is a upper receiver. Compare prices from multiple merchants and find the best deal.
Specifications
Colt Firearms M4 Complete Upper Assembly Only Black .223 Rem / 5.56 11.5-inch
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Build history on GunPartPicker
Builders on GunPartPicker first added the Colt Firearms M4 Complete Upper Assembly Only Black .223 Rem / 5.56 11.5-inch to a build in July 2026.
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