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Product Discontinued by Manufacturer

DEZ Arms AR-15 5.56 Barrel w/Government M6 Contour has been discontinued by DEZ Arms and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, Rifle Barrels, AR15 Barrels yourself to try and find the perfect replacement for you!

Product Info for DEZ Arms AR-15 5.56 Barrel w/Government M6 Contour

Barrel Description: 6 groove, 1x9 Right-Hand Twist, Button Rifled, Nitro Carburized, Threaded Muzzle, 4150 CMV (chrome-moly vanadium) Steel, Chambered in 5.56 NATO DEZ ARMS, INC. match barrel. The precision 4150 CMV barrel with M4 cut extension, chambered 5.56 NATO, pulled-button rifling process, lapped bore and 11 crowned barrel delivers pinpoint accuracy. Each barrel is concentrically cut and muzzle threaded 0.5 -28 R.H. twist to accept flash hiders/suppressors, stressed relieved, turned on center to prevent accuracy robbing distortion when the barrel heats up, and hardened to 26-33 Rc giving the barrel a long life.image

Our pulled-button rifling produces a superbly accurate bore diameter with uniform rate of twist. The match barrel is machined to tighter specifications producing a tighter fit for greater accuracy.

Nitro carburizing: Nitro carburized interior and exterior finish which is also applied to the barrel extension and gas port during heat treating and creates a monolithic black finish that is superior to hard chrome. The process does not add material to the internal dimension of the bore, increasing surface hardness to between 58-65 HRC, lowering bore friction, enhancing surface lubricity, improving running wear performance, enhancing corrosion resistance and heat resistance over industrial hard chrome.

In addition, the barrel extension and gas port are also surface converted minimizing barrel extension wear, increasing corrosion resistance and limiting gas port erosion.

Features of DEZ Arms AR-15 5.56 Barrel w/Government M6 Contour:

  • Detailed Specs:
  • Caliber: 5.56 NATO
  • Length: 16in
  • Contour: Government M6
  • Twist Rate: 1x9
  • Muzzle: 0.5in-28 Threaded / Crowned
  • Diameter at Gas Port: .750in
  • Gas Type: Mid
  • Material: 4150 CMV Steel
  • Rifling: Button / 6 Groove
  • Finish: Nitro Carburized / Black Nitride
  • Weight: 1 Lb
  • 11.9 Oz.

Package Contents:

  • DEZ Arms AR-15 5.56 Barrel w/Government M6 Contour

Gun Parts and Accessories

130 / 30
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Gunsmithing Tools & Accessories

115 / 15
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Magazine and Accessories

121 / 21
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Gun Triggers

115 / 15
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Gun Sights

119 / 19
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Gun Stocks

117 / 17
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Mounts, Rings and Accessories

120 / 20
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Related Products to DEZ Arms AR-15 5.56 Barrel w/Government M6 Contour

DEZ Arms AR-15 5.56 Barrel w/Government M6 Contour Unavailable & Discontinued Models

List of Unorderable Models

  • DEZ Arms AR-15 5.56 Match-Grade Barrel, 16 inch, Government M6 Contour, Mid Length, Nitride, Black, 425086NITROM6MG , MPN: 425086NITROM6MG , UPC: 751778883165 , Code: 3H8-ATB-AR15BGM6B-425086NITROM6MG
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Last updated 2026-09-20 UTC.