7.5" 300 BLACKOUT AR-15 Upper Receiver w/ 4" Free Float Hand Guard & Sights - DISCONTINUED

$ 378.09

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7.5" 300 Blackout AR 15 Pistol Upper BLK

DISCONTINUED 5/20/2017

This complete AR-15 upper receiver comes with everything you need already installed. Just pop the pins on your pistol or registered SBR lower, pop on this upper and you're ready to roll.

Each Ground Zero Precision complete upper receiver is assembled by one of our certified AR-15 technicians to our rigorous specifications and comes ready to pop onto your lower receiver and go.

Every upper receiver we build must pass three thorough inspections and is test fired for functionality and accuracy. Please allow for additional order to ship time as we build these to order.

Includes all of the following (Assembled):

  • Ground Zero Precision 7075 T-6 Aerospace Grade Aluminum Stripped Upper Receiver, Hard Coat Anodized (Black) to MIL-A-8625
  • 7.5" Modern Profile AAC 300 Blackout Chambered, 1:7 Twist Pistol Barrel, 4140 Gun Quality Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved, Fully Parkerized (Black)
  • Phosphate Bolt Carrier Group (Option 1): Ground Zero Precision Dead Bolt +P Premium Full-Mass Bolt Carrier Group - Carrier: 8620 Steel, Black Phosphate finish, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested - No Logo, Bolt: 158 Carpenter Steel, Magnetic Particle Inspected, High Pressure Tested, Black Phosphate Finish, Gas Key: 4041 Steel, Grade 8 Fasteners, Staked to Mil-Spec
  • Nib Bolt Carrier Group (Option 2): Ground Zero Precision Dead Bolt +P Premium Full-Mass Bolt Carrier Group - Carrier: 8620 Steel, Nickel Boron finish, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested, Bolt: 158 Carpenter Steel, Magnetic Particle Inspected, High Pressure Tested, Nickel Boron Finish, Gas Key: 4041 Steel, Grade 8 Fasteners, Staked to Mil-Spec
  • QPQ Nitride Bolt Carrier Group (Option 3): Ground Zero Precision Dead Bolt +P Premium Full-Mass Bolt Carrier Group - Carrier: 8620 Steel, Black QPQ Nitride finish, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested - No Logo, Bolt: 158 Carpenter Steel, Magnetic Particle Inspected, High Pressure Tested, Black QPQ Nitride Finish, Gas Key: 4041 Steel, Grade 8 Fasteners, Staked to Mil-Spec
  • Ground Zero Precision Mod 2 .750 Same Plane Rail Height Railed Gas Block
  • Seemless Stainless Pistol Length Gas Tube with Roll Pin
  • A2 "Birdcage" 5/8 X 24 Flash Hider with Crush Washer - QPQ Nitride Finish
  • Mil-Spec Charging Handle - 7075 T-6 Aerospace Grade Aluminum, Hard Coat Anodized (Black) to MIL-A-8625
  • Mil-Spec Ejection Port Cover Door Assembly with Pin, C-Clip and Spring
  • Mil-Spec "Target" Forward Assist with Spring and Roll Pin - QPQ Nitride Finish
  • Ground Zero Precision 4" Knurled Free Float Tube 7075 T-6 Aluminum, Hard Coat Black Anodized Finish
  • Ground Zero Precision Polymer Pop-Up Front & Rear BUIS

 

 

 

PREVIOUS SKU: GZP-75-300BLK-T-S