Dirty Bird 16" Big Gunner 8.6 BLK Carbine Complete Upper - D212

The Dirty Bird 16″ 8.6 BLK complete upper is the next evolution in the Dirty Bird AR-10 complete upper line. 8.6 BLK is referred to as 300 BLK’s big brother, and is known for its exceptional long-range capabilities which is why it’s a great choice for your next AR-10 pattern build. The Dirty Bird 8.6 BLK complete upper is a great starting point for your next big-game hunting AR. Our 16″ 8.6 BLK upper offers flat trajectories and retained energy at extended distances, while also delivering substantial power and penetration.This cartridge produces devastating take down power and you can shoot up to 1,000 yards with supersonic ammunition.

Built on a top-tier Forged Upper Receiver and finished with Dirty Bird’s 17.5″ AR-10 High-Profile SMRS M-LOK Handguard. 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 locktite 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.

16″ 8.6 BLK Big Gunner Carbine Barrel

• 4150 Chome Moly Vanadium Steel
• 1-3 Twist Rate
• Carbine Length Gas System

 15″ AR-10 High Profile Free-Float M-LOK Handguard

Tough

• Machined from aircraft grade 6061-T6 aluminum extrusions.
• Type 3 hard anodizing

Versatile

• M-LOK attachment slots on all sides (except top)
• Full 1913 Picatinny top rail
• Snag free design with smooth, uniform octagonal surface ideal for accessory attachment or application of specialty coatings or patterns.

Practical

• • This version features the patent pending anti-slip / anti-lift attachment method (ASAL^TM) for an easy, timing-free installation that provides an extremely rigid and secure attachment. Read below for more technical details about this impressive new attachment method.
  • Compatible with most known low profile gas blocks.

Dirty Bird AR-10 Billet Stripped Upper Receiver

• High Profile
• 7075-T6 Billet Aluminum
• Fits most DPMS Profile lowers

M16 8.6 BLK Winchester BCG

• 8620 M16 DPMS style carrier
• 9310 .308 bolt
• 4140 billet gas key
• 4140 Cam Pin nitride treated for wear resistance
• Billet Machined Extractor

Charging Handle

• Mil-Spec Style
• 6061-T6 Billet Aluminum
• Smooth Operation and Positive Grip under Extreme Conditions
• Type 3 Class 2 Hard Coat Anodizing

Made in the USA

Dirty Bird Industries’ Limited Lifetime Warranty