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Noveske has a reputation for building uppers that run hard and shoot straight, and the N4 Infidel 13.7" is a clear example of what that name means. This complete upper is chambered in 5.56 NATO and built around a 13.7" 416R stainless barrel with a 1:7 twist, individually serialized for quality control. The Noveske KX3 flash suppressor is permanently pinned and welded to bring the barrel out to a 16" overall length, so you get a shorter, handier package without a tax stamp. Everything arrives fully assembled and ready to pin onto any mil-spec AR-15 lower.
The heart of this upper is a hand-polished Noveske Match Chamber with extended, hand-polished feed ramps for smooth feeding round after round. The mid-length gas system softens the recoil impulse and keeps the rifle running reliably, and the Noveske-marked low-profile gas block sits on a .750" journal and is pinned to the barrel. An M4 barrel extension rounds out a setup that is built for consistency and accuracy.
The receiver is Noveske's 4th Generation precision-machined billet upper, cut from 7075-T6 aluminum with extended feed ramps. It wears a Type III hardcoat anodize topped with Armor Black Cerakote for a tough, uniform finish that holds up to real use. The 15" NSR free-floating M-LOK handguard features an anti-rotation interface and a continuous Picatinny top rail, giving you a stable mounting platform and plenty of real estate for lights, grips, and other accessories.
Noveske didn't cut corners inside either. You get a phosphate-coated, full-auto compatible bolt carrier with a chrome-lined carrier bore and key, a Carpenter 158 bolt that is heat-treated and MPI tested, and properly staked grade-8 gas key bolts. The Noveske Love Handle ambidextrous charging handle makes running the gun easy from either side. It all adds up to an upper that's ready to shoot right out of the box.
Yes. This is a complete upper that ships fully assembled with the phosphate-coated, full-auto compatible BCG and the Noveske Love Handle ambidextrous charging handle installed. You just pin it onto your mil-spec lower and you're ready to go.
The barrel itself measures 13.7", but the Noveske KX3 flash suppressor is permanently pinned and welded to the muzzle. That brings the total barrel length out to a full 16", giving you a shorter, more maneuverable setup without the need for a tax stamp.
It's designed to drop onto any standard mil-spec AR-15 lower receiver. The 4th Generation billet upper also includes an adjustable tension screw on the complete rifle build for a tight fit, though the upper on its own simply pins up like a standard assembly.
The 416R stainless barrel pairs a hand-polished Noveske Match Chamber with a 1:7 twist, which handles a wide range of common 5.56 and .223 loads and favors heavier bullets. Each barrel is individually serialized for quality control, so you're getting a precision piece built for consistent, tight groups.
| UPC | 840906135723 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 03002553 |
| Barrel Length | 13.7" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Model | |
| Product Type | Upper |
| Sights | Flat Top |
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