ALWAYS ARMED 16" BARREL (300 BLACKOUT) | 5/8 X 24 ***OVERRUN***
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This 16 inch Pistol Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish.

Quench Polish Quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. QPQ is a huge improvement over Chrome Lined barrels. Unlike chrome lining, where the chrome is built up on the surface, QPQ converts the surface without the risk of dimensional build up. The technique is used when two or more of the following properties are required in a work piece:
wear resistance corrosion resistance lubricity fatigue strength Features:
Length - 16" Material - 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E) Finish - QPQ Corrosion Resistant 11-Degree Target Crown - Further improve accuracy Gas System Length Profile - Medium Gas Block Journal - .750" Gas Block Journal Twist Rate - 1/7 Twist Muzzle - 5/8x24 Threaded Muzzle Weight - 29.6oz Other Info - QPQ coated M4 Feed Ramp Extension All NFA/ATF Rules Apply Depending on your state and local laws, you could use this barrel with a lower receiver that is a Registered SBR, or Pistol. Possession of this barrel along with a Non-NFA lower receiver may be Prohibited. We are not lawyers and the above information is not legal advise. Make sure you understand the most up to date federal, state and local laws before proceeding with this product.