R0193 15.5" Black 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 MagpulA(R) M-LOKA(R) accessory mounting slots that attach to the barrel nut using four steel cross bolts coated in black nitride for corrosion resistance. Every surface has been precision machined and chamfered to ensure no uncomfortable, sharp edges can be found. The upper and hand guard are then sprayed with Radian Cerakote options for a perfectly matching finish. The Radian Model 1 Upper Receiver and Hand Guard includes: 1 x Billet Upper Receiver w/ Dust Cover, Light Weight Forward Assist, & Hand Guard Anti-Rotation Pin 1 x Raptor-SD Ambidextrous Charging Handle 1 x Hand Guard w/ Magpul M-LOK Modular Attachment Interface 1 x 7075-T6 Aluminum Barrel Nut 1 x Barrel Nut Wrench 4 x Hand Guard Cross Bolts, Washers & Nuts