The Radian Model 1 Upper Receiver and Hand Guard are precision CNC machined as a matching set, structurally reinforced in critical areas for improved strength and rigidity. The upper receiver is cut from billet 7075-T6 aluminum and assembled with dust cover, hand guard anti-rotation pin, light weight forward assist, and Raptor-SD Ambidextrous Charging Handle. The hand guard features Magpul M-LOK accessory mounting slots that attach to the barrel nut using four steel cross bolts coated in black nitride for corrosion resistance.Type: Semi-CompleteSeries: Upper & Handguard SetSights: None, Optic ReadyCaliber: multi-caliberHandguards: 15.50" Magpul M-LOKHandguard Finish: Radian Black CerakoteReceiver Description: Aluminum