Spike's Tactical Upper, Fits AR Rifles, Black, Flat Top, Machined from a Mil-Spec 7075 T6 forging, with Forward Assist and Ejection Door installed SFT50M4
Specifications:

Type	Stripped
Caliber	Multi-Caliber
Sights	None, Optic Ready
Barrel Length
Barrel Material
Twist
Barrel Description
Barrel Finish
Receiver Description	7075-T6 Aluminum M4
Receiver Finish	Black Hard Coat Anodized
Handguards
Handguard Finish
Barrel Length Range