Spike's tactical m4 flat top upper receiver is the same high quality m4 mil-spec upper used on their factory builds.This forged upper is constructed of 7075 t6 aluminum with a durable type iii hardcoat anodized finish.It includes the forward assist, and ejection port door, spring, and rod.This stripped upper weighs 8.5 oz.
Receiver Finish: Black Hard Coat Anodized Type: Stripped Caliber: Multi-Caliber Sights: None, Optic Ready Receiver Description: 7075-T6 Aluminum M4
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