16″ Gov’t Profile Barrel – 5.56NATO Melonite/QPQ

(6 customer reviews)




A no frills excellent quality barrel with all the options you want. 15 day no questions asked return policy for ANY reason. As with all our Melonite/QPQ barrels, we ensure the barrel and extension are separate during the 1000+ degree treatment so there is no risk of the extension working loose. With thousands of barrels in use today, Integrity Arms has established market share in the industry as a viable option to the much more expensive barrels being offered. Rest assured that we will stand behind our products should there be a need…but don’t plan on needing us to.

  • 16″ Overall Length
  • Mid Length Gas System
  • Milspec 4150V Gun Quality Steel
  • Milspec 8620 Case Hardened M4 Extension
  • .750 Gas Block Area
  • 1:7 Twist Rate
  • 1/2×28 tpi
  • Weighs 1.8lb
  • Dimpled for Easy Gas Block Install
  • Government/Medium Profile
  • Properly Melonite/QPQ Treated
  • 5.56 NATO Chamber

Matched Bolt Specs

  • 9310 Alloy (7% stronger than C158)
  • MPI Tested/Marked
  • Manganese Phosphate
  • Shot Peened
  • Properly Heat Treated/Quenched
  • S7 Tool Steel Extractor
  • Upgraded Extractor Spring w/O-Ring
  • Properly Headspaced to Barrel
  • 100% Made In U.S.A.

Additional information

Choose Option

Barrel Only, Add Headspaced Bolt

6 reviews for 16″ Gov’t Profile Barrel – 5.56NATO Melonite/QPQ

  1. PJ32K

    Blows other ‘budget’ barrels out of the water. After about 2000 rounds with M855, consistent 2 moa groups which is more than acceptable for me with milspec ammo. Finish is beautiful too and markings are crisp & clean.

  2. Scott M

    Only complaint was a scuff near the muzzle, but Integrity swapped it out no problem. Im pickier than most. Shoots everything I ffed it and more accurate than me.

  3. Frank SC

    Waffled on this for about a week and decided to call and ask questions. Honestly, the customer service is what put me over the top…and I’m glad I got it. Barrel looks great and performs flawlessly. 1 moa with 77gr SMK reloads pretty easily

  4. John (verified owner)

    I ordered this barrel on 2 Apr 17, and received it today, the 5th – now that’s a fast shipment of an order. Integrity, like every thing it does, its act together in the shipping department. I’ve ordered a number of barrels over the years within this barrel’s price range and some higher for that matter, but after receiving and inspecting this barrel I found it put all the others to shame. The melonite/QPQ finish is awesome and I can actually read the caliber and twist on the barrel without having to use a flashlight. I’m looking forward to shooting it. If your looking for a great barrel for a great price, this barrel is for you.

  5. Scotty

    Excellent barrel. Sub Moa when used with quality ammunition. I was getting .5″ groups at 100yds with Nosler 62gr SST. Finish is beautiful with an even deep black gloss but not so glossy as to be shiny. In depth review can be seen here

  6. casey (verified owner)

    I haven’t been able to test it yet but jumped on it when I seen it had every spec I was looking for and the price was amazing. This barrel is beautiful. I love the melonite. Its a simple barrel, great price and everything you want.

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