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Mfg Item #: B2K614JF00
224 Valkyrie Complete Upper Assembly has a standard black Anodized receiver, A 4140 chromoly 18", 1:7, M4 medium contour, and threaded for 1/2x28 barrel. Muzzle device: Knight Stalker. Gas system: low Profile Steel Gas Block and Mid-Length Gas Tube. Handguard: Keymod 12", anodized black. Bolt carrier group: Standard 6.8 SPC 2, M16 Profile. Bolt: Mag Phosphate, 9310 Steel, MPI Tested. Carrier: Mag Phosphate, 8620 Steel, Staked Gas key. Charging handle: Standard, anodized black. Treatment: Non RF85.