Dirty Bird 16" Govt Mid 556 M-LOK Upper Assembly

Dirty Bird 16" Govt Mid 556 M-LOK Upper Assembly

This Dirty Bird Industries Complete Upper features a Black Nitride 16" Sub-MOA Government Profile barrel chambered in 5.56 with a 1:7 twist. Built on a top-tier t-marked Forged Upper Receiver and finished with Dirty Bird's 15" SMRS M-LOK Handguard available in several color options. No corners are cut when manufacturing these complete uppers. All barrels are dimpled and cold blued, use a black nitride 4140 steel gas block and a stainless steel gas tube. The gas block set screws feature knurled cone tops and are installed using blue loctite ensuring that no amount of firing will cause the set screws to come loose but they will still able to be removed for servicing if needed.

Made in the USA - Backed by Dirty Bird Industries' Limited Lifetime Warranty

Barrel:

• Chambered in 5.56 (will also function with .223)
• 16″” Government Profile w/ 1:7 Twist
• Mid-Length Gas System
• Black Nitride Finish
• High Pressure Tested and Magnetic Particle Inspected
• Sub-MOA Guarantee

BCG

• Designed for use with both 5.56 and .223
• Strategically relocated load bearing surfaces reduce carrier tilt/can’t during recoil, thus increasing reliability and longevity
• Additional wall thickness in the gas exhaust port area for added strength and rigidity
• High Pressure Tested and Magnetic Particle Inspected

Handguard:

• Tough
  • Machined from aircraft grade 6061-T6 aluminum extrusions.
  • Anti-rotation tabs.
  • Type 3 hard anodizing or Cerakote™ sprayed at 1 mil thickness per spec.
• Versatile
  • M-LOK attachment slots on all sides (except top)
  • 1913 Picatinny top rail with shaved and beveled center section.
  • Snag free design with smooth, uniform octagonal surface ideal for accessory attachment or application of specialty coatings or patterns.
• Practical
  • No extraneous cuts in the aluminum simply for the sake of weight savings or enhanced visual appearance.
  • Aircraft Grade aluminum barrel nut. In our tests, the aluminum barrel nuts are just as effective when torqued to spec. Additionally, the weight savings enable us to utilize a longer barrel nut design which means more surface area at the attachment point without adding unnecessary weight.

Upper Receiver

• Precision Machined from Top Tier 7075-T6 Aluminum Forgings (forge marks may vary)
  
  • Not all forged uppers are created equal and we only use the best for our uppers meaning they will be free from excessive pitting, machined to spec and finished with quality (not purple or chalky) hard coat anodizing
• M4 Feed Ramps

Available Handguard Colors:

Black, Magpul™ FDE, Magpul™ OD Green, Midnight Bronze