Spikes SFT50M4 Flat Top Stripped Upper MultiCaliber 7075T6 Aluminum Black Anodized Receiver for M4 Platform

Spikes Tactical M4 flat top upper receiver is the same high quality M4 MilSpec 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. NOTE: Requires charging handle barrel handguard gas block muzzle device gas tube and BCG Bolt Carrier Group to complete.