Right To Bear 20" 5.56 Government Rifle Length AR 15 Barrel, Modern Series
This 5.56 chambered 20" Gov Profile Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.
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 Black Nitride, 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 workpiece:
- Length - 20"
- Material - 4150 Chrome Moly Vanadium
- Profile - Goverment
- Finish - QPQ Corrosion Resistant
- Gas System Length - Rifle-Length
- Gas Block Journal - .750" Gas Block Journal
- Twist Rate - 1/7 Twist
- Muzzle - 1/2x28 Threaded
- Weight - 35oz