COMPLETE UPPER 16" M4 FLAT TOP Manufacturer Model Number: DT1009 Manufacturer: Del-Ton Model: Upper Caliber: 223 Rem | 5.56 NATO Type: Accessory-Uppers Item Type: Accessory Sights: A2 Front Sight Shipping Weight: 5.35 Feature: M4 Barrel Feature: Carbine Length Handguard Feature: Bolt Carrier Group Optic Adjustable Objective: false Optic Reticle Illuminated: false