Diamondback 5.56×45mm NATO Barrel — 16", Black Nitride, Chrome Moly Vanadium Steel (556C16H50B8NYR | UPC 815875019046)
Build a dependable, do-everything AR with the Diamondback 16" 5.56 NATO Black Nitride Barrel. Made from Chrome Moly Vanadium (CMV) steel and treated inside and out with a corrosion-fighting black nitride finish, this barrel is engineered for durability, accuracy potential, and easy maintenance—perfect for general-purpose carbines, training rifles, and hunting/varmint uppers. Part 556C16H50B8NYR gives you the proven 16" length that balances velocity and handling, backed by Diamondback’s quality machining.
Why Choose This Diamondback 16" 5.56 Barrel?
CMV Strength & Longevity: 4140/4150 Chrome Moly Vanadium steel resists throat erosion and heat better than basic carbon steel, standing up to high round counts.
Black Nitride Inside & Out: Ferritic nitrocarburizing hardens the bore and exterior for improved wear resistance, easier cleanup, and outstanding corrosion protection.
16" Sweet Spot: Delivers reliable velocity for common 55–77gr 5.56 loads while keeping overall length fast and maneuverable.
AR-Ready Details: Standard 5.56 NATO chamber, common muzzle threading, and gas system compatibility for straightforward integration with quality components.
Low-Maintenance Performance: Nitride surfaces shed fouling for quicker bore care after classes, matches, and multi-mag range sessions.
Key Features & Specs
Caliber: 5.56×45mm NATO (safe with .223 Rem.*)
Length: 16 inches
Material: CMV (Chrome Moly Vanadium) steel
Finish: Black Nitride (bore & exterior)
Muzzle Threads: 1/2×28 (typical for 5.56/.223 — verify before purchasing devices)
Gas System: 16" barrels are commonly mid-length (some builds use carbine-length — confirm exact spec)
Part Number: 556C16H50B8NYR
UPC: 815875019046
Twist/Contour: May vary by lot—request current spec sheet if you’re tuning for specific bullet weights or suppressor use.
*Use quality .223 Rem in a 5.56 chamber; always follow ammunition manufacturer guidance.
Performance You’ll Notice
Practical Accuracy: Quality CMV steel and free-float setup support tight groups with common training and duty loads.
Reliable Cycling: Pair with the correct gas length and a properly weighted buffer for positive lock-back and consistent ejection.
Cleaner Bore: Nitride treatment reduces copper/carbon adhesion—spend less time scrubbing and more time shooting.
Versatile Ballistics: 16" length provides solid velocity for 55gr varmint rounds up through 75–77gr match/defense loads.
Ideal Use Cases
General-Purpose Carbine Builds: LPVOs or red dots + magnifiers for a do-it-all setup.
Training & Carbine Courses: Durable finish and CMV toughness for high-volume drills.
Predator & Varmint Uppers: Pair with accurate loads to work coyotes, foxes, and small game.
Truck/Ranch Rifles: Weather-resistant nitride finish is made for real-world carry.
Compatibility & Build Notes
Upper/Handguard: Works with standard AR-15 uppers and free-float rails; ensure proper gas-block ID clearance.
Gas System & Buffer: Match gas length (mid/carbine) with an H/H2 buffer as needed to tune recoil and ejection (aim for a 3–4 o’clock pattern).
Headspace: Always gauge with your chosen 5.56 BCG.
Muzzle Devices: Verify 1/2×28; re-torque and re-zero after installing brakes/flash hiders/suppressor mounts.
Optics: A quality LPVO (1-6×/1-8×) or red dot is an excellent pairing for this barrel length.
Installation Tips (Non-Instructional)
Prep & Inspect: Degrease receiver threads and lightly oil the barrel extension.
Torque & Align: Install the barrel nut to spec; confirm gas-tube alignment through the barrel-nut channels.
Secure Gas Block: Use proper thread treatment on set screws and verify alignment over the gas port.
Function Test: Confirm ejection pattern and bolt lock-back; adjust buffer weight if needed.
Zero & Dope: Set a 50/200 or 100-yd zero, then record holds for your preferred loads.
Care & Maintenance
Quick Clean: Nitride bores respond well to solvent soak, patch, light nylon/bronze brush, and a thin oil film.
Hardware Checks: Re-check gas-block and muzzle-device torque after the first range day and periodically thereafter.
Weatherproofing: Wipe external metal after rain/snow; store dry to maximize service life.
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Diamondback 5.56×45mm NATO Barrel — 16", Black Nitride, CMV Steel (556C16H50B8NYR | 815875019046): a durable, accuracy-minded, low-maintenance barrel that brings proven 5.56 performance to your next AR build—ready for training days, predator hunts, and everyday carry in the field.
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