N4 Infidel 13.7" Upper

Barrel (416R Stainless)

• 13.7” 5.56mm, 416R stainless, 1:7 twist

• Individually serialized for QC; hand‑polished Noveske Match Chamber; extended hand‑polished feed ramps

• Mid‑length gas tube system; Noveske‑marked low‑profile gas block (.750” journal), pinned to barrel

• M4 barrel extension; bead‑blasted finish

• ½”‑28 muzzle threads with a Noveske KX3 flash suppressor permanently pinned & welded

Barrel (Cold Hammer Forged)

• 13.7” 5.56mm, Cold Hammer Forged (CHF), 1:7 twist

• 5.56 NATO chamber; mid‑length gas tube system; Noveske‑marked low‑profile gas block (.750” journal), pinned to barrel

• M4 barrel extension with extended hand‑polished feed ramps; bead‑blasted finish

• ½”‑28 muzzle threads with a Noveske KX3 flash suppressor permanently pinned & welded

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Upper Receiver

• Noveske 4th Generation precision‑machined billet receiver from 7075‑T6 aluminum with extended feed ramps

• Type III hardcoat anodize + Cerakote finish for uniform color and superior durability

• Black nitrided Noveske‑marked forward assist

• Noveske Love Handle ambidextrous charging handle with anti‑rotation interface to the handguard

• Phosphate‑coated bolt carrier, full‑auto compatible, chrome‑lined carrier bore and key

• Properly staked Grade‑8 American‑made gas key bolts

• Phosphate Carpenter 158 bolt (heat‑treated, MPI tested) where specified

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Handguard

• 4th Generation NSR 15” (M‑LOK) free‑floating handguard

• Type III hardcoat anodize + Cerakote finish for uniform color and long‑lasting wear resistance

• M‑LOK mounting positions every 45° and continuous Picatinny 1913 top rail

• Lightweight American‑made steel barrel nut