9" Free Floated Ballistic Advantage 300 Blackout Complete AR-15 Keymod Upper Receiver With SLR Adjustable Gas (9BA300-7THPA)

$ 485.29

Ballistic AdvantageThis complete 300 Blackout AR-15 pistol upper receiver features a premium 9" Ballistic Advantage barrel, SLR Rifleworks Sentry 7 adjustable gas block and comes with everything you need already installed. Just pop the pins on your pistol or registered SBR AR-15 lower receiver, pop on this upper and you're ready to roll.

Building your own custom free-floated AR-15 Pistol upper receiver is a snap when you have all of the right parts. It's even easier when someone has already done the legwork to source all of the components, made sure they are of the highest quality and fit, BUILDS AND TESTS THE UPPER RECEIVER and then put them all into a nice little package for you. 

Well that's exactly what we have done and it's absolutely awesome! 

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

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
  • Ballistic Advantage 9" Modern Profile 300 Blackout Barrel - 4150 CrMoV Steel, QPQ Nitride Finish, Magnetic Partical Inspected, High Pressure Tested - Pistol Gas 1:7 Twist

Bolt Carrier Group:

  • 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

Additional Components and Specifications:

  • SLR Rifleworks Sentry 7 Adjustable Micro Gas Block - .750 Dia., 4140 Steel Block with 4140 Nexturn Swiss Metering Screw, QPQ Salt Bath Nitride Finish - Black
  • Seemless Stainless Pistol Length Gas Tube with Roll Pin
  • Ground Zero Precision 7" Tac-Hunter Keymod Free Float Handguard - 7075 T-6 Aluminum, Hard Coat Anodized (Black) to MIL-A-8625
  • A2 "Birdcage" 5/8 X 24 Flash Hider with Crush Washer - Salt Bath QPQ Nitride Finish
  • Mil-Spec Charging Handle - 7075 T-6 Aerospace Grade Aluminum, Hard Coat Anodized (Black) to MIL-A-8625
  • Mil-Spec Dust Cover Door Assembly with Pin, C-Clip and Spring
  • Mil-Spec Target Forward Assist with Spring and Roll Pin

300 Blackout Chamber

 

PREVIOUS SKU(S): GZP-BA9TH73PA, GZP-BA9TH73NA