LBE Unlimited 16″ .300 Blackout Black Nitride AR-15 Barrel


Click Here for Price
Out of Stock

Join the waitlist to be emailed when this product becomes available

Orders will Ship within 1 Business Day
AT3™ Low Profile Steel Gas Block + Gas Tube + Roll Pin Combo

AT3™ Low Profile Steel AR 15 Gas Block + Gas Tube + Roll Pin Combo - .750 - Pistol


LBE Unlimited 16″ .300 Blackout Black Nitride AR-15 Barrel

The LBE Unlimited 16″ .300 Blackout AR-15 Barrel is an excellent choice for any AR-15 build. It is made from high-quality materials and features a durable black nitride finish. The 1:8 twist rate allows for a wide range of bullet weights to be used, making it a versatile option for any shooting situation. The .300 AAC Blackout is a rifle cartridge developed in the United States for use in the AR-15 carbine. Its purpose is to achieve ballistics similar to the 7.62×39 cartridge in an AR-15 platform while using standard AR-15 magazines at their normal capacity.

This barrel’s gas system is also pistol length, making it function more reliably with a wide assortment of bullet weights and brands and in conjunction with suppressors. It is precision machined to ensure a perfect fit and has an opened gas port optimized for .300 Blackout.

Whether you’re building a new rifle or upgrading an existing one, the LBE Unlimited 16″ Pistol Length 1:8 .300 Blackout AR-15 Barrel is an excellent choice.


  • Brand: LBE Unlimited
  • Model: 16″ .300 Blackout Black Nitride AR-15 Barrel
  • MPN: ARBAR300PL-16
  • Barrel Length: 16″
  • Caliber: 300 Blackout
  • Color: Black
  • Material: 4150V Steel
  • Finish: Nitride
  • Twist: 1:8
  • Gas Block Size: .750
  • Gas System Length: Pistol


Caliber.300 Blackout
Barrel Length16 inches
Barrel Twist Rate1:8 inches
Barrel Material4150 CMV
Muzzle Threads1/2/2028
Barrel FinishBlack Nitride
Gas Block Size.750″ Gas Block
Barrel Gas SystemPistol
Gas Block Journal Length1.9 inches
Barrel ExtensionM4
Weight38.08 ounces

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

LBE Unlimited Warranty

  • For warranty information about LBE Unlimited products, you can email them directly at