The Radian Weapons Model 1 Upper & Handguard Set is a premium, matched-receiver foundation precision CNC-machined from 7075-T6 billet aluminum. Finished in a durable Radian Black Cerakote, this AR-15 set is structurally reinforced in critical areas to provide maximum rigidity and strength. The 10 free-float handguard features the Magpul M-LOK modular attachment system and is secured to the barrel nut using four black-nitride coated steel cross bolts. This semi-complete assembly comes pre-installed with a lightweight forward assist, dust cover, stainless steel anti-rotation pin, and the suppressor-optimized Raptor-SD ambidextrous charging handle. Note: As an Upper & Handguard Set, this is a non-barreled assembly. To complete the upper, you will require a barrel, gas system, bolt carrier group, and muzzle device.