High Standard Uppers Gun Parts
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12 months ago
Complete, fully assembled M4-type upper receiver is ready to install on your lower of choice. Add a rear sight or scope, and you’re ready to go shooting. Perfect for converting a rifle to a carbine, or build a completely new gun customized to your exact requirements. Manufactured in the U.S. from top-quality materials to original Colt specs; each part is gauge-checked during assembly for correct tolerances under MIL-STD 105D. Forged from 7075 T6 aluminum alloy, then hardcoat anodized for added strength and wear resistance.