5.56 SOCOM & HBAR AR-15 Barrels by Brownells

Published on March 9, 2018
Duration: 2:01

Paul from Brownells introduces two new AR-15 barrels: a 16-inch M4 SOCOM profile barrel and a 20-inch HBAR barrel. Both are chambered in 5.56 NATO, feature a QPQ nitride finish, 4150 steel construction, magnetic particle inspection, and a 1:7 twist rate. The SOCOM barrel includes an F-marked front sight base and M4 feed ramps, while the HBAR is designed for service rifle competition.

Quick Summary

Brownells offers two new 5.56 NATO AR-15 barrels: a 16-inch SOCOM profile with an F-marked front sight base and M4 feed ramps, and a 20-inch HBAR barrel ideal for service rifle competition. Both feature 4150 steel, QPQ nitride finish, and a 1:7 twist rate for enhanced durability and performance.

Chapters

  1. 00:00Introduction
  2. 00:06Brownells SOCOM Profile Barrel
  3. 00:19SOCOM Barrel Details
  4. 00:33SOCOM Barrel Construction
  5. 00:52SOCOM Barrel Specs
  6. 01:07Brownells 20-inch HBAR Barrel
  7. 01:17HBAR Barrel for Competition
  8. 01:22HBAR Barrel Specs
  9. 01:46Conclusion

Frequently Asked Questions

What are the key features of the Brownells 5.56 SOCOM profile AR-15 barrel?

The Brownells 5.56 SOCOM profile barrel is 16 inches long, features a QPQ nitride finish, is made from 4150 steel, and is magnetic particle inspected. It includes an F-marked front sight base, M4 feed ramps, a 1:7 twist rate, and 1/2x28 threads. The front sight base pins are not fully installed for easier customization.

What is the intended use for the Brownells 20-inch HBAR AR-15 barrel?

The Brownells 20-inch HBAR (Heavy Barrel AR) barrel is designed for increased accuracy and heat dissipation, making it a good choice for service rifle competitions. It shares many features with the SOCOM barrel, including 5.56 NATO chambering, 4150 steel, and a 1:7 twist rate.

What is the difference between a SOCOM profile barrel and a standard M4 barrel?

A SOCOM profile barrel is essentially a beefed-up M4 barrel, specifically designed to remain compatible with accessories like the M203 grenade launcher. This often means a slightly thicker profile in certain areas while maintaining the ability to accept standard handguards and front sight bases.

What does 'QPQ Nitride Finish' mean for an AR-15 barrel?

QPQ Nitride Finish, also known as Melonite or Salt Bath Nitrocarburizing, is a heat treatment process that hardens the steel of the barrel and significantly improves its resistance to corrosion and wear. This results in a durable and long-lasting barrel surface.

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