Sionics Weapon Systems 5.56 Mid-Length Lightweight Contour AR-15 Barrel - Nitride - 16"

Manufactured by Sionics Weapon Systems
SKU: 16-LW-S-N
MPN: 16-LW-S-N
Manufactured by Sionics Weapon Systems
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The Sionics Weapon Systems 5.56 Mid-Length Lightweight Contour Barrel is a high performing and durable barrel for your next build. It boasts a mid-length gas system for direct impingement rifles. The Sionics barrel offers 1:8 twist rate and a 1/2x28 thread for the attachment of muzzle devices to help mitigate muzzle flash, noise or recoil. It boasts a 41V50 chrome moly vanadium steel chrome construction and is nitrided for a high-degree of reliability and accuracy. The barrel is nitride coated and cryogenically treated for long term durability, further enhancing the strength and service life of this barrel. In short, the Sionics Weapon Systems 5.56 Mid-Length Lightweight Contour Barrel offers the durability-enhancing features that one would expect from a high-grade carbine. Sionics attention to detail and reputation are on display with this barrel, a barrel that is durable strong enough to withstand heavy use and abuse. The Sionics Weapon Systems Contour Barrel is a quality upgrade to any rifle and a great component for any AR build by providing unmatched durability, reliability and accuracy.

  • Manufactured by Sionics Weapon Systems
  • 5.56mm NATO chamber
  • 16-inch barrel
  • 41V50 chrome moly vanadium steel barrel
  • Salt bath nitride finish
  • 1:8” twist rate
  • Mid-length gas system
  • Magnetic Particle Inspected

A SIONICS Weapon System is a firearm that is more than just built from the ground up by master gunsmiths for professionals in the field. They're more than just an assembly of quality components. Every firearm built by SIONICS has been carefully crafted from the best components available by a single master gunsmith before a second master gunsmith puts it through a 19-point quality inspection and test firing process to ensure that ever SIONICS firearm has been built without compromise.
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Barrel CoatingSalt Bath Nitride
Barrel ContourLightweight
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandSionics Weapon Systems
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.625
Gas System LengthMid-Length
Thread Pattern1/2 X 28
Twist Rate1:8
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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