Purchase the Dirty Bird 10.5″ 5.56 NATO Pistol Nitride M-LOK Pistol Kit w/ Holosun 403C Red Dot here!

Dirty Bird 10.5″ Government Carbine 5.56 M-LOK Upper Assembly

This Dirty Bird Industries Complete Upper features a Black Nitride 10.5” Government Profile barrel chambered in 5.56 with a 1:7 twist. Built on a top-tier Forged Upper Receiver and finished with Dirty Bird’s 9.7″ SMRS M-LOK V2 or V3 Handguard available in several color options. No corners are cut when manufacturing these complete uppers. All barrels are dimpled and cold blued, use a .750 black nitride 4140 steel gas block and a carbine 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.

Made in the USA – Backed by Dirty Bird Industries’ Limited Lifetime Warranty

Barrel

  • Chambered in 5.56 (will also function with .223)
  • 10.5” Government Profile w/ 1:7 Twist
  • Carbine Gas System
  • Black Nitride Finish
  • Magnetic Particle Inspected

Handguard

  • Patented ASAL (Anti-Slip, Anti-Lift) mounting system
  • Included M-LOK QD Mount
  • “Competition Cut” top rail (V2) or continuous picatinny top rail (V3).

Upper Receiver

  • Precision Machined from Top Tier 7075-T6 Aluminum Forgings (forge marks may vary)
    • Not all foged 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 Feedramps
  • Forge Markings may vary
  • May or may not have T-Marks

Holosun Paralow Solar Powered 2 MOA Red Dot Sight

Features:

  • Designed for day and night use
  • 2 MOA on dot size
  • Parallax-free
  • Unaffected by extreme weather conditions
  • Durable construction

NBS C158 SP/HPT/MPI 5.56 Bolt Carrier Group – Black Nitride

Bolt

  • Machined from Carpenter Technology No. 158 alloy.
  • Heat treated
  • Shot peened per ASTM B851/SAE AMS2430S
  • Individually High Pressure Tested (test fired)
  • HP proof testing, 100% using a high pressure M197 or SAAMI commercial equivalent, without evidence of failure
  • Individually Magnetic Particle Inspected after Initial Test Fire
  • Manganese Phosphate Finish

Extractor

  • Tool Steel Extractor
  • Black Nitride Finish
  • Mil-Spec O-Ring

Carrier

  • Machined from AISI 8620 aircraft quality alloy per ASTM A108/A322-13
  • Full Mass M16 Profile
  • Stress Relieved
  • Black Nitride Finish

Gas Key

  • Machined from 4130 chromoly steel alloy per ASTM A108/A322-13
  • Grade 8 Hardware
  • Properly Staked
  • Hard Chrome Internal
  • Permatex sealed

NBS Enhanced AR-15 Mil-Spec Charging Handle

OEM 5.56/.223 Lower Parts Kit includes:

Bolt Catch, Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch spring Buffer, Retainer, Buffer Retainer spring Disconnect, Disconnect spring Hammer (black or silver in color), Hammer Pin, Hammer spring Magazine Catch, Magazine Catch Button, Magazine Catch spring Pistol Grip (A2 style), Pistol Grip Lock Washer, Pistol Grip Screw, Pivot Pin, Pivot Pin Detent, Pivot Pin Detent spring Selector, Selector Detent, Selector Detent spring Takedown Pin, Takedown Pin Detent, Takedown Pin, Detent spring Trigger (black or silver in color), Trigger Guard, Trigger Guard Roll Pin, Trigger Pin, Trigger Spring

SB Tactical SBA3 Pistol Stabilizing Brace

Features:

  • Minimalist design
  • 5-position adjustable
  • Integral, ambidextrous QD sling socket
  • ATF compliant, US veteran designed and proudly made in the USA
  • Product includes:  brace, adjustable nylon strap

Discount Mil-Spec Carbine Receiver Extension / Buffer Kit

Take a look at our other AR-15 Parts here!

Advertised price expires 08/01/2021